I stayed at Gabriel's place for 4 days. Gabriel was kind enough to show me a few spots and bring up my heavy luggage to the flat. It's a nice flat. Comfortable bed, which is important after long days of sight seeing and walking. Conveniently located. It has everything you need. The washing machine didn't work but there was a place 4 minutes away to wash my clothes, not a big deal. Everything is close by. Restaurants, bars, grocery store, convenient store right downstairs.
It's on the 4th floor, long walk up the stairs. A lot of different smells (food). No a/c which was really needed. There is a fan but when it just moves hot air doesn't really help. I would suggest some blinds in the rest of the flat, there is only in the bedroom. Not enough privacy, people can look inside.
The area is really loud at night until at least 3 am. So if you are not there to party I suggest you stay elsewhere. The windows are well sound proof. But because no a/c the windows need to be open to get some air otherwise it's extremely hot.
The area bairo alto is a little dirty. Every morning when I would walk outside there would be a bunch of empty glasses and beer bottles from the party people. A real mess.
If I would have known all of these things before, I would have stayed somewhere else. But in all it was a good experience.