It's a room with a tree view.
An entrepreneur in Poland reasoned rather than booking a hotel looking at a forest, customers would quite like to stay in one.
Kuba Fraszka runs the tree house hotel.
(SOUNDBITE) (Polish) TREE-HOUSE HOTEL OWNER, KUBA FRASZKA, SAYING:
"We really appreciate the beauty of this place, the beauty of the gorges which are unappreciated and forgotten. We would like to revive them a little, and bring back a youthful spirit in people and invite guests here, as it would undoubtedly be a huge attraction."
The hotel in eastern Poland is made up of three self-contained rooms.
Each can only be reached using a steep staircase.
They come with heating and other home comforts.
But don't expect to find television or radio, because its designers want to give residents a break from modern life.
And, of course, it can revive the childhood dream of living in a tree house among the branches.
Anna Daniluk is a tree house guest.
(SOUNDBITE) (Polish) TREE-HOUSE GUESTS AND WARSAW RESIDENT, ANNA DANILUK, SAYING:
"It turns out that even after becoming an adult we still have the need to return to such places where we are put a couple of meters above the ground, where a person really is in the branches of trees, where it is surprisingly modern, but cosy inside."
The hotel owners want to put camping tents in trees too, and now they've gone up, it's time to go down, with plans for an underground hotel.