The room #15 is the balcony room right in the middle of the photo. It is actually larger than I expected.
There is no desk in the room but there is a TV. Bathrooms are shared and are very clean. Shampoo is provided. There are also some very basic foods in the fridge available for guests. Wi-Fi is suuuper fast (12+ MBytes download per second, not Mbits).
Good for travellers who do not carry a lot of stuff and just need a bed for a night.