The apartment I got is the same from the pictures, small but comfortable (good mattress). Indeed, they don't leave any "essential," so if you are in quarantine (like I did), bring some basics (there was only one roll of toilet paper and nothing in the kitchen like salt, pepper, etc.).
Being there all day for two weeks, I can understand what other people say about some noises from the other apartments, but really it was not constant and barely noticeable most of the days.
One specific point to consider is that there was a weird noise at night during my stay, like a drop of water somewhere, but it wasn't from inside the apartment. I think it was some internal pipe issue. The hosts were super helpful, very responsive, and accommodating, and I recommend staying here. It is very well located so if you will stay there for quarantine, try to book for more than two weeks to enjoy the surroundings.