Deep Sleep Hotel
Deep Sleep Hotel, Railway Station, Tanygrisiau, Blaenau Ffestiniog LL41 3TP, United Kingdom




Gumo's take
Deep Sleep Hotel is a unique, off-grid underground accommodation located 1,375 feet below ground in an abandoned Victorian slate mine in Blaenau Ffestiniog, Wales. It offers adventure seekers an immersive, expedition-style stay in either insulated log cabins or a luxury grotto room, complete with low-voltage lighting, Wi-Fi, and composting facilities powered by renewable micro-hydro energy. The experience includes a guided descent through historic mine tunnels, a pollen-free environment, and all-inclusive meals, making it ideal for those seeking a remote, eco-conscious, and adventurous lodging experience.
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Research this stayHow guests rate it
- Location
- 88
- Facilities
- 78
- Staff & Service
- 92
- Room Comfort & Cleanliness
- 85
What guests love
- Unique underground location in a historic Victorian slate mine, offering a one-of-a-kind adventure experience
- Sustainable and eco-friendly design with micro-hydro powered amenities and composting facilities
- High staff-to-guest ratio with on-site instructors providing safety and support throughout the stay
Worth knowing
- Physical fitness is required for the challenging descent and ascent, limiting accessibility for some guests
- Limited traditional hotel facilities, such as pools or gyms, due to the remote and off-grid nature of the site
Common questions
What kind of accommodations are available at Deep Sleep Hotel?
Deep Sleep Hotel offers insulated log cabins and a luxury grotto room for guests, all designed for an immersive, expedition-style stay underground.
Is the hotel accessible for guests with limited physical mobility?
No, the hotel requires physical fitness for the challenging descent and ascent through the mine tunnels, which may limit accessibility for some guests.
What kind of amenities are available at the hotel?
The hotel provides low-voltage lighting, Wi-Fi, composting facilities, and all-inclusive meals, powered by renewable micro-hydro energy.
