I stayed in the apartment with my two teenagers for a few days.
Overall the apartment was not bad. Quite central even though, as described, some prostitutes lingering around early evenings. At night not a problem, also it was not too loud overall.
Honestly the flat is in my opinion way too small for 4 people (even for us 3 too small). One chair and one mini table that allows only one person to eat / sit at the same time.
The bathroom was ok and quite clean.
Overall cleanliness was not bad except breadcrumbs on the chair, sofa when expanding to a bed, and some not so clean plates.
The mattress of the bed was ok but seemed to have a sort of plastic cover below the linen. This results in a not ideal air circulation.
The curtains let in some light, so the room becomes light early mornings. Not ideal if you want to sleep a little bit longer.
Communication was good, fast and helpful.