I had a wonderful stay in Barcelona. Fabrizio (Reddy's roommate) opened the door for me, this one was very warm.
However, there were some points that I would have liked to know beforehand.
The electricity went out completely 2x during my 4 days, this seems to be the case more often. So during this time you can neither charge your smartphone, use the wifi and sit in the dark (the room has no windows).
I encountered some bugs in the kitchen, which is why I only ate outside. In general, the cleanliness of the apartment is very good, both the bathroom and the other rooms are clean.
On my first day, a strange man opened my room door while I was sleeping. Since then I have locked myself in when I was in the room.