Located 419 meters below the Snowdonia mountains in Wales, the 'Deep Sleep' hotel is the deepest hotel in the world. This hotel has four twin cabin bedrooms, a private bedroom, a cave-like room with a double bed, a dining area, and toilet facilities. Deep Sleep is situated in a former slate stone mine called Cwmorthin, the largest abandoned clay stone mine in the world.

Located at a depth of 1,375 feet (419 meters) underground, this hotel is acclaimed as the deepest hotel in the world. Deep Sleep was inaugurated in April by the company Go Below and is only open every Saturday for a one-day stay.

To stay at this hotel, you don't need to worry because the rental price per night is very cheap. With only £550 ($688) per night, you can already experience staying at the Deep Sleep hotel. This hotel is also equipped with adequate facilities, including running water, electricity, and even Wi-Fi through a one-kilometer ethernet cable from the 4G antenna on the surface. Not only will visitors experience sleeping underground, but they will also traverse steep and challenging routes through old mine shafts to reach this hotel.

To stay at this hotel, visitors can make reservations online. It should be noted that this hotel only opens accommodations on Saturdays, so you can only stay for one day at this hotel. On Saturday, visitors are required to visit the Go Below headquarters near the town of Blaenau Ffestiniog to meet trained guides who will accompany them to the underground hotel.

Before arriving at the Deep Sleep hotel, visitors must hike for 45 minutes through the mountains, then prepare at a small hut and get ready to descend into the Cwmorthin mine. This challenging route consists of old stairs, abandoned bridges, and slacklines. The journey to this hotel takes about an hour. Upon arriving at the Deep Sleep Hotel, guests will be served with warm drinks and expedition-style food.