The place was really clean and the neighbourhood was great, silent and safe (we were there in March) and about 10 minutes walk from all the restaurants in the old town. Also many bakeries close to get a fresh morning bread.
All went well with Alberto, keys and such, even though it would have been easier if you spoke English. :) The rooftop terrace was huge and lovely - but the stairs are a bit dangerous, reeeally steep and the door was very stiff, so not the best combo. For us, two young adults, it was okay, but for small kids or afterparties absolutely not. Also the room with one bed is not for light sleepers IF it's raining - the roof is plastic, so the sound is quite big.
But after all these words I would totally recommend Alberto's place!