We stayed 3 days at the apartment at the middle of November. The location is advantageous, you can reach the central station (bus, train) by some mins walk but as it's located in a busy street, it was noisy. If you're looking for a calm and silent place and would like to relax, I suggest to choose another place. In November the apartment was cold, but we had an air conditioner that warmed the room slowly, anyway we felt it cold. The kitchen is well equipped (we didn't cook anything, just had a breakfast every day). The kitchen is in the same room with the bed but it's visible on the photos. Federico tried to help us but I think he doesn't really speak English so we couldn't ask for advices. We've already seen cleaner apartments but there was no any big issue.
All in all, we're satisfied, worth the money. I think Federico's flat is suitable for adventurous couples who would like to just sleep, eat something and take a shower before or after a busy day of sightseeing.