Overall very pleasant experience.
Preparation of the trip: Federico responds quickly to emails, booking was very easy. .
Welcome: we didn't meet Federico but someone (Jazmin) was waiting for us at the apartment and explained all what was needed.
Location: the apartment is located close by facilities such as metro
station (San Giovani) and a supermarket (good to know: open on
Sunday!). And if you like walking and if it's not too hot, it's about 15
minutes from the coliseum. The thing is that the metro doesn't take
you to the very center, you have to take buses and maybe a bus map (we couldn't get one in the metro station) would be nice to have in the
apartment.
Apartment itself: nice, very functional, clean. I recommend it for a couple. Great to have air con in the bedroom (actually quite fundamental in August!). Also well secured. Sheets and towels provided. Comfortable bed, handy furnitures and everything you need to iron.