We arrive at the place and smelled really really strong of humidity, as if the place wasn't opened in a long time. We could barely breath so we opened the windows of the big bedroom (the part of the flat with windows) even though it was cold and rainy. We never closed the windows and on the 3rd day (when we left) the smell was bearable but still strong. The bathroom and the double bedroom were clean and in good condition (the mattress was small and uncomfortable but acceptable). The main issue came in the single bedroom, there were A LOT of spiders and spider webs around, the place hadn't been cleaned in a while. I complained and at the beginning they took it seriously but they never gave a real solution. They offered us a team of cleaners to come the next day but that's it. Next day we went out and when we went back we noticed things were changed and the single bedroom was a bit cleaner than before, they just forgot to clean 2/3 of the spiderwebs, at least the onces on top of the bed were removed, yay!
Overall a really bad experience and I wouldn't recommend it. As a good note, the location is perfect and the bathroom was clean.