My girlfriend and I stayed here for a few nights. The location is great - very close to the center of the city and about a 5 minute walk to the Pantheon.
We didn't meet Ramin but his colleague let us in and showed us the apartment.
The bathroom wasn't as clean as it could've been and could use a thorough cleaning. Other than that the apartment was clean.
A note about the location - it can get quite noisy at night. There are cars and scooters, garbage trucks, a restaurant close by, and a decent amount of foot traffic (and loud natives/pedestrians) at night. This is probably the case for most places in the center of the city, but it's something to be aware of, especially if you are a light sleeper.