Before reading, please keep in mind that this is my personal experience and doesn't mean that you will have the same one.
I booked studio (room with the kitchen). Please note, that the kitchen doesn't have microwave or oven, only cattle and multi cooker. The first room I stayed in was number 401, I had to change it because bellow the room there are AC's from the train station and they are VERY loud (didn't sleep all night).The next day, I changed to room 420, which was smaller in size, but I didn't really care about it, as long as it was quite. When I came back at night, I realized that AC doesn't work properly, and doesn't heat the room. I went down to the receptionist, she told me that central heating is on, so it should be warm in the room. I went up, but batteries in the room were cold. I wanted to call the receptionist, but the phone wasn't working, so I had to go down again. The receptionist was very kind to go up to the room with me. She checked the AC, and it was indeed not heating. She told me that all she can do, is offer another blanket. (keep in mind, that it was around 3C degrees outside). In the morning I went to take shower, but the hot water wasn't hot, it was barely warm. In the room 401 (the one I stayed night before), it was boiling hot. When I came down , I mentioned the issues, and was told that it will be fixed. Long story short, the water was fixed, but the AC worked the same way as it worked the night before.