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OneTime 25

9.3 · Exceptional · 3 reviews Rome, Italy 4 rooms
1 ton CO₂ removed · UN-verified
Book OneTime 25
1 ton CO₂ removed · same as direct · free cancellation
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Booking impact

Every night here removes 29× its own CO₂.

The average hotel night produces 35 kg of CO₂. IMPT funds 1 ton of UN-verified carbon removal on every booking — same price as direct, paid from our commission.

35 kg

CO₂ produced by one hotel night, on average.

1 ton

UN-verified CO₂ removed by your booking.

29×

Of the per-night footprint — removed, not avoided.

10% off

Coupon code & discounted price at OneTime 25.

Booking OneTime 25 through IMPT gets you a discounted rate — around 10% below the direct price on most listings — plus free cancellation and 1 ton of UN-verified CO₂ removal per booking. The discount is applied automatically at checkout. No code to copy.

Best rate guarantee Free cancellation 1 ton CO₂ removed Same price as direct
See discounted price →
92 / 100
IMPT Climate Score

How this booking earns its mark.

Carbon removal40 pts
Rate advantage17 pts
Free cancellation18 pts
Platform trust17 pts

What 1 ton of CO₂ looks like.

Trees
45 trees grown a year
Driving
79 days car off the road
Home energy
5 months household
Aviation
1 LON–NYC return flight

About OneTime 25.

OneTime 25 is a 1-star hotel in Rome, Italy, bookable through IMPT's carbon-neutral hotel programme. Every booking removes 1 ton of UN-verified CO₂ from the atmosphere — physically extracted under United Nations carbon frameworks, retired on-chain, and paid from IMPT's commission at no extra cost to the guest. On-site facilities include Free Wifi, Non smoking rooms, Parking, Room Service, Shops, Air conditioning.

That makes OneTime 25 one of the genuinely eco-friendly, sustainable, and climate-positive stays available in Rome. The carbon-removal model used here differs from conventional offsets in three ways: removal credits are physically pulled from the atmosphere rather than representing avoided emissions; every retirement is recorded on a public blockchain so the credit can't be resold or double-counted; and verification is handled under UN frameworks — the most rigorous standard available.

Travellers searching for an eco hotel, green hotel, sustainable accommodation, or net-zero stay in Rome can book OneTime 25 at the same rate as direct (often less), with free cancellation on most rooms and a discounted price applied automatically at checkout. The IMPT booking is rate-matched against Booking.com and Hotels.com — the green angle never costs you extra. Browse other carbon-neutral hotels in Rome →

What's at the property.

Free Wifi
Non smoking rooms
Parking
Room Service
Shops
Air conditioning
Lifts
Express check in
TV
Hairdryer
Shower
Toiletries

Where you'll be.

Via Calabria 25 Interno 5 Via Veneto 00187 Rome Italy Rome, Rome, Italy

Why this is genuinely different.

Removal

Real removal. Not offsets.

IMPT funds UN-verified carbon removal — physically pulled from the atmosphere, not a credit that might be resold.

Price

Same rate as direct.

The carbon removal comes from IMPT's commission. You pay the same as Booking.com or Hotels.com — often less.

Trust

Publicly tracked.

Every tonne is retired on-chain and listed publicly. UN-framework aligned. No double-counting.

How it works.

1
Book

You book OneTime 25.

Same rate as any other platform — often cheaper. Pick dates, hit Book Green, done in 60 seconds.

2
Remove

IMPT removes 1 ton of CO₂.

Funded from IMPT’s commission. Real projects. Real carbon pulled from the atmosphere — UN-verified.

3
Verify

You can track the impact.

Every tonne is retired on-chain — project, location, verification body, immutable. No double-counting.

UN-verified. The highest standard.

UN
VERIFIED

Why UN verification matters.

Most hotel "carbon-neutral" programmes use cheap avoidance offsets — credits that have been over-counted, double-sold, or untraceable. IMPT only retires UN-verified removal credits, the most rigorous independent standard available, and records each retirement on-chain so the credit can never be resold.

UN-verified Removal not avoidance On-chain retired No double-counting

Questions guests ask about OneTime 25.

Sustainability, booking & policies, and what's on site — answered. Filter by topic or search for a keyword.

Sustainability

01 · Sustainability#

Is OneTime 25 a carbon-neutral hotel?

Yes. Every booking of OneTime 25 through IMPT funds 1 ton of UN-verified CO₂ removal — physically pulled from the atmosphere, retired on-chain, no double-counting. That's about 28× the per-night footprint, fully removed at no extra cost to the guest.

02 · Sustainability#

What makes OneTime 25 an eco-friendly hotel?

OneTime 25 is bookable through IMPT's green hotel programme: every stay funds 1 ton of UN-verified carbon removal, the booking is rate-matched or cheaper than direct, and the property's residual emissions are offset against measured atmospheric removal — not avoidance offsets.

03 · Sustainability#

Is OneTime 25 a sustainable hotel?

Sustainable hospitality has four pillars — energy, water, waste, community. OneTime 25 is part of IMPT's green programme, and the residual carbon footprint of every stay is fully removed via UN-verified projects. Property-specific certifications (LEED, Green Key, EarthCheck) are listed on the page when available.

04 · Sustainability#

Who verifies the carbon removal at OneTime 25?

Every credit IMPT retires is independently audited under United Nations carbon frameworks — the most rigorous standard available. Each tonne removed by a booking at OneTime 25 is publicly trackable on-chain at app.impt.io/projects. No double-counting, no avoidance credits.

05 · Sustainability#

Is the carbon at OneTime 25 really removed, or just offset?

Removed. Most travel programmes buy avoidance offsets — certificates representing emissions someone promised not to produce. IMPT funds physical removal credits under the UN framework. The CO₂ is actually pulled from the atmosphere, the credit is retired on-chain, and it can't be resold.

06 · Sustainability#

Does it cost more to book OneTime 25 as a green hotel?

No. You pay the same rate as direct — often less. The 1 ton of CO₂ removal is funded from IMPT's commission, not added to your bill. Free cancellation is available on most rooms.

07 · Sustainability#

How much CO₂ does my stay at OneTime 25 actually remove?

Each booking funds 1,000 kg (1 ton) of UN-verified CO₂ removal — the equivalent of about 45 trees grown for a year, 79 days of driving avoided, or one return flight London→New York fully neutralised.

Booking & policies

08 · Booking & policies#

Is there a discount or special rate for OneTime 25?

Yes — booking OneTime 25 through IMPT applies a discounted price (around 10% below the direct rate on most listings) and every booking funds 1 ton of UN-verified CO₂ removal at no extra cost. The discount is applied automatically at checkout.

09 · Booking & policies#

Does OneTime 25 offer free cancellation?

Most rooms at OneTime 25 include free cancellation. Refundable rates are clearly marked at checkout. Cancellation deadlines are shown per room before you confirm.

10 · Booking & policies#

What are guests saying about OneTime 25?

Guests rate OneTime 25 9.3/10 — exceptional. Based on verified reviews from guests who stayed at the property.

11 · Booking & policies#

Where is OneTime 25 located?

OneTime 25 is in Via Calabria 25 Interno 5 Via Veneto 00187 Rome Italy Rome, Rome, Italy. Coordinates: 41.9098, 12.4972.

12 · Booking & policies#

What time is check-in and check-out at OneTime 25?

Standard check-in at OneTime 25 is from 15:00 and check-out is by 11:00 local time. Early check-in and late check-out may be available on request.

13 · Booking & policies#

How many rooms does OneTime 25 have?

OneTime 25 has 4 Hotel. Room types are shown at booking with live availability.

At the property

14 · At the property#

Does OneTime 25 have free WiFi?

Yes — OneTime 25 offers WiFi for guests. Coverage usually extends to all rooms and public areas.

15 · At the property#

Does OneTime 25 have parking or EV charging?

Yes — OneTime 25 offers parking for guests. Where the property has electric-vehicle chargers or eco-parking incentives, that's noted at checkout.

16 · At the property#

Is breakfast included at OneTime 25, and is it locally sourced?

Breakfast is offered at OneTime 25. Many of IMPT's green hotels source ingredients locally — check the room options at booking for whether breakfast is included with your rate.

17 · At the property#

Is OneTime 25 pet friendly?

Yes — OneTime 25 welcomes pets. Pet policy and any associated fees are confirmed at booking.

18 · At the property#

Does OneTime 25 offer airport transfer?

OneTime 25 offers airport transfer for guests on request. Charges and timing are confirmed at booking.

Travel resources & references

About Rome & how to get there.

Verified outbound sources for travellers. Last verified: 29 March 2026.

Skip the offsets.
Book real removal.

Same hotel. Same price. 1 ton of CO₂ physically removed per booking. UN-verified, on-chain retired.

OneTime 25
1 ton CO₂ removed · UN-verified