This place is awesome! The apartment is small but everything is incredibly well thought-out so space was never an issue (despite our two enormous suitcases!). Lots of nice decorative touches and super-clean. The building is very secure, and being on the top floor eliminates almost all noise from within the building. The 5 flights of spiral stairs may be an issue for some people, but the view from the terrace makes it all worthwhile! This really is a special find.
Trastevere is loud at night (we were there on a weekend, maybe not as bad during the day) so bring your earplugs. But the area is loaded with restaurants, cool shops and tons of people watching. Street musicians everywhere. We walked to everything we wanted to see, from St. Peters to the Spanish Steps to the Colloseum. The best way to see Rome is on foot! Perfect location.