I very much enjoyed my six week stay at Federico's place. The apartment is in walking range of everything but tucked a bit out of the way of the tourist throngs. The road noise at night never bothered me, but earplugs would be good for noise-sensitive sleepers. There was never any noise from any other apartment in the building
The apartment was quite comfortable - good mattress, comfy couch, nice kitchen and dining area. I rarely needed to use the AC/Heat, but the couple times I did it was very quick to bring the whole place to the desired temperature. The big windows let in ample light and, with pleasant temps during my stay, opening them often let in a nice breeze.
The few times I needed something or had questions, Federico was very quick to respond and always very helpful and courteous. Check-in was very smooth, and his welcome packet had lots of good information about the apartment and surrounding area.
I would definitely reccomend this place and would happily stay here again.