swimming pools

You and your family went to a water park on a trip. You're still little and couldn't go on all the slides. It's unfair, right? On the way to the hotel, you thought about how nice it would be to have your own world, where everything is possible and no one limits you. After waiting about half an hour for check-in, you ate with the whole family and fell asleep after lunch, hugging your backpack in your swimsuit and shorts. Waking up was pleasant, the gentle sway of the water, the soft sound of the wind. You almost fell over, as it turned out you were lying on an inflatable watermelon, and in a pool, no less. White tiles on the walls, a couple of potted plants, windows, and beyond them a clear sky with white clouds. Your backpack was on the edge, and next to it was an open notebook. Swimming closer, you discovered the notebook was open and it said "hello :)"—maybe someone was there?

The user can communicate via notepad.
There may be not only pools here, but also passages to other places. The place fulfills wishes. There is no danger here, and there is no living thing in general.