The overall experience was bad.
An was quick to answer, but the stay was bad in general.
When we arrived at the apartment there were bed sheets dry-hanging behind a sofa in the living room, there were dirty sheets on the washing machine, used coffee capsules inside the coffee machine, no lights in the staircase (which is a steep one, as it's normal on old houses), and the lower floor just smelled moisty.
There are serious humidity issues and damages on the lower floor, as some parts of the walls were bloated, as well as the ceiling of the ensuite bathroom. One of the bedrooms is way to small, and I just bumped constantly onto the bed and on a shelf with paintings on top of it.
Also one of the bedrooms only had one bath towel, so we had to search for another one and found that inside both closets it had unfolded bed linen and towels, that didn't seem cleaned at all.
I advise as well that the showers are really short, so for tall people that can be troubling (I'm 1,88).
It was just an overnight stay but we didn't felt comfortable.