There are many pros and a few cons with this listing.
We stayed there for three weeks for vacations purposes and we were looking for a great value with the possibility to cook our meals.
The location is amazing, with easy access to buses, trains, underground...You can go anywhere, very quickly. Outside or inside the city. Groceries (a lot of them) are all around.
The kitchen is fairly furnished and we cooked many meals without a problem. The common area is spacious and the room has all you need to be comfortable. The room itself is between the toilet and another room. And the walls are VERY thin. By that I mean you hear anything happening in both the other guest's room and the toilet. You have to be comfortable with that and the...sense of community it brings :P
Upon our arrival, there was an issue with the main gate of the building. It was broken and anybody could enter. That caused drug users and others to squat the building and leave seringes/trash here and there. One night, a fight broke between a tenant and one of them. Eventually the door got fixed and the issue was resolved. Despite this incident, the overall area felt safe, but we say that as seasoned travelers.
There was a lock issue one night and we couldn't enter the flat. Federico was quick to resolve the issue, despite being away for holiday. From start to finish, it was very easy to communicate with Federico. He even ordered a new fan when one broke.
All in all, we had a great stay at this place. Everything is as described.