I talk about a problem happened to my family but the apartment has very others good facilities and services. Maybe bad circumstancies made us known a problem that others hostes doesn't affect. The thin wall and thin floor and the sound of steps gave us a first very bad night. The people in upstairs moved noisily around the unit from 1.30 AM to 5.00 AM. We didn't rest comfortably.
Edwin wrote them and the two next nights has been better.
The lack of sound isolation may be a real problem. The description talks about it and another hostes also refer to the upstairs noise.