The place is centrally located and the check in was super easy. The room has a lot of light and is colorful, well equipped for a short stay. When I arrived there was an unpleasant small in the room, I feel it could be that the mattress is not well ventilated, but I am not sure. The linens and everything smelled fresh.
I didn't sleep very well, for 2 reasons - the mattress is quite hollow in the center already, and the walls are super thin. Next to me 2 guests were speaking quite loudly and putting music on in the night. The last night was super quiet - so I guess that will always be a surprise in a shared flat :-)
Other than that, M Carmen was super friendly (via messages, never saw her!). I added the heating to my room, which is 6 Euros extra per night, because for me it was too cold to sleep without. Wifi is stable and the appartment quite clean.