We had a lovely time! The place is lovely and clean. It is very spacious. It is very near the main train station (Termini) and other public transportation (Metro and Tram). There are asian restaurants and shops nearby. Frank was so kind to wait for us - we were 40 minutes late because I was on crutches (had an accident a day before) and my mum has knee problems so we were walking very slowly. We also met Soledad briefly and she is very very nice too!
Booking was very swift, they communicated very well.
All in all, we enjoyed our stay and we highly recommend Frank and Soledad's place. We will definitely stay in their accommodation again.