Myself and my Boyfriend spent 2 nights at Federico's place. He wasn't in town, however he made sure somebody was there to greet us and help us with everything. The place is a nice apartment extremely well located (2 min from the metro San Giovanni Line A and walking distance from the main sightseeing places) unfortunately due to the time of the year (winter) we took little advantage of the balcony and the terrace which are a great part of its beauty.
If the internet doesn't work, try to reboot your neighbor's router.. it worked for us.

Wishing you a nice stay at Federico's place!!

Cheers
Erica&David