First of all it was almost impossible to "climb" the four levels to the apparment. I hit several times my head due to the unreasonably low height of the staircase. Also it was so narrow that you could carry only backpacks. Our suitcase was impossible to be carried by a single person.
Next, there was no soundproofing! Although the owners threatened us with many penalties (in the contract), we heard the neighbours burping, farting and coughing. And by the night, the noise of the crowdy street was unbearable!
Also many bad smells were coming out of the bathroom's tubes!
Finally we were all the time being warned (with no reason) for varius penalties. We felt of being bullied instead of being relaxed in this beautiful city (ex. if you leave after 11:00 50euros/30 min. If you loose your key cart 3euros fine, if you are noisy the sound detector will catch you, if a friend of you comes visit you, the police will arive(!!!) and the list continues). My wife and I, felt as we were watched...