We enjoyed staying at Alvaro's place and they were very communicative about check-in and when we had questions. Super quick to answer and pleasant.
We liked the location quite a bit and found it good for daily use.
The internet was pretty good and i don't recall having any issues with it.
They had a brita filter which I think is always an appreciated addition.
There wasn't any cooking oil and stuff of that nature beyond salt (although we left some, so I guess there is now).
One of the bedrooms was relatively quiet and really dark and had AC....but it smelled pretty noticeably of cigarette smoke. This isn't the first or last time this has happened in europe in a bedroom near a balcony, so maybe that's just the way it is, but I tend to think of no-smoking as i won't have to sleep in a room that smells like smoke.
The other bedroom (where we slept after the first night struggle with the smell) didn't smell, had a fan, but no AC, and was relatively dark....except when people came into the apartment building. Since people come back late at night in spain, this happened many times through the night, but there is a window to the apartment stairway in this bedroom and just a sheer curtain, so when the automatic lights came on when someone trudged up the staircase, it would make the room pretty bright and frequently woke us up.
I think that issue could be fixed relatively easily and overall we enjoyed our stay.