Coupon code & discounted price for Guesthouse21
New IMPT customers receive a discounted price of 10% off their first booking at Guesthouse21. The coupon code is applied automatically at checkout when you book through IMPT — it stacks with our best-rate guarantee. Find a lower price elsewhere within 24 hours and we'll refund the difference.
- Discounted price on your first stay at Guesthouse21
- Free cancellation on most rates
- Best-rate guarantee — match anywhere on the web
- Every booking removes CO₂ at no extra cost
Key facts about Guesthouse21
Guesthouse21 is a 3-star hotel in Berlin, Germany. Check-in is from 15:00 and check-out by 11:00. Featured amenities include free wifi. Every booking through IMPT funds verified climate-positive action at no extra cost.
| Property type | Hotel |
|---|---|
| Star rating | 3★ |
| Check-in | From 15:00 |
| Check-out | By 11:00 |
| Location | Berlin, Germany |
| Address | Martin Luther Str. 21, Berlin, Germany |
| Coordinates | 52.4976, 13.3464 |
| Languages | English |
| Climate impact | Carbon-neutral booking · UN-verified |
What's included at Guesthouse21?
Guesthouse21 offers 3 verified amenities across the property — restaurant(s), free wifi, bars, and more. Full list below.
- 🏨Restaurant(s)
- 📶Free WiFi
- 🏨Bars
Your booking removes real CO₂.
When you book Guesthouse21 through IMPT, a portion of every booking funds UN-verified carbon removal — real farmers, real land, every tonne publicly tracked. You pay the same as any direct rate; the planet is what changes.
What guests say about Guesthouse21
Guesthouse21 is rated 7.3/10 — Very Good based on 57 verified guest reviews from people who booked at Guesthouse21.
Where is Guesthouse21 located?
Guesthouse21 is located in Berlin, Germany — Martin Luther Str. 21. Coordinates: 52.4976, 13.3464. Tap the map below to open the location in Google Maps.
More hotels in Berlin
Frequently asked about Guesthouse21
Is there a discount code for Guesthouse21?
Yes. New IMPT customers can save 10% on a stay at Guesthouse21 with discount code IMPT10. Apply the code at checkout — it stacks with our best-rate guarantee.
How can I get the best rate at Guesthouse21?
Booking Guesthouse21 through IMPT.io guarantees the best available rate. Use code IMPT10 for an additional 10% off your first booking. If you find a lower price elsewhere within 24 hours, we'll refund the difference.
How do I book Guesthouse21?
Book Guesthouse21 through IMPT using the booking widget on this page. Select your dates, apply discount code IMPT10 if eligible, and click Book Now. Every booking removes CO₂ from the atmosphere at no extra cost to you — UN-verified.
Does booking through IMPT cost more?
No. Booking through IMPT costs exactly the same as booking direct. IMPT funds the carbon removal from its commission — you pay the same rate, the planet wins. Zero premium, zero catch.
Is free cancellation available at Guesthouse21?
Most room rates at Guesthouse21 include free cancellation. The cancellation policy is displayed in full before you confirm your booking.
Does Guesthouse21 have free WiFi?
Yes — Guesthouse21 offers free WiFi for all guests across the property.
How does IMPT verify the carbon removal?
Every carbon credit funded through IMPT is independently UN-verified through farm-to-plate carbon removal projects — primarily regenerative agriculture. You can track your credits at any time through your IMPT account.
What are the check-in and check-out times at Guesthouse21?
Standard check-in is from 3:00 PM and check-out by 11:00 AM. Early check-in and late check-out can be requested and are subject to availability — contact the hotel directly after booking.