We were a couple staying at Santhome for 1 night. Overall the apartment is very recommend.
Bed: was very comfortable.
Location: great location, in a quiet small street, just behind the main piazza of Trastevere. We love the lively area of Trastevere. Keep in mind that it's not in the center of the city where all the attractions are, but it's not far.
Host: Luigi's father welcomed us. He was very friendly and have us a lot of information about the apartment and the area.
Space: The apartment is renovated and cozy. A lot of space, with a window view on a small piazza.
The only disadvantage was that there was no AC, but only a fan. Still it was a bit hot in the apartment. We were told that next week AC will be installed, so we suggest verifying that before booking.