The flat is on the first floor (that's one flight up, for Americans who may not be used to the European method of counting flights in a building), and rests in a very old building with some quaint, interesting architecture. The door into the flat is a heavy, solid wooden door that seems to come out of another era.
The flat itself is a linear rectangle, with the entrance around the middle of one long side. Upon entering, you will have the very comfortable living room to the right (complete with pull-out sofa and a small dining table), the kitchenette immediately in front of you, and a bathroom and master bedroom to the left.
The bedroom's layout is interesting, holding a king-sized bed which is pressed up against the wall that hides a massive walk-in closet. The bed is nice and firm (just the way I like it!) and the room is quite large, by most European standards.
One of the things that you may notice is that the flat is very clean and tidy. There has been a great deal of effort put into making it as efficient as possible, and there is no difficulty finding anything that you might need. WiFi is strong in the living room, but tends to weaken considerably as you move towards the back of the flat.
One of the surprising aspects of the flat is just how well the back bedroom filters out the (often quite loud) noise from the street below. What may sound like a boom-crash opera in the living room, cannot be heard at all in the master bedroom. If someone is taking the pull-out sofa, however, and is a light sleeper, there may be some discussions as to who gets to have the peace and quiet in the back room.
Without question, though, the brilliance of this flat is its location. Less than a 5 minute walk to Ponte Sisto and the fountain at Piazza Trilussa, everything you could possibly wish to see is (technically) within walking distance. Located in Trastavere, the lively nature of the bustling street is pure Rome. A very safe neighborhood, we were able to walk to and from the flat at all hours of the day and night (we would get up early to go photograph the Coliseum and the Pantheon before the sunrise) without any concerns beyond the typical "watch your stuff" mentality that you should always keep.
Sara, the owners, was extremely nice and made every effort to ensure that our stay was pleasant and comfortable. We were able to communicate entirely through the AirBnB app and any questions or requests were handled immediately. It's extremely valuable to have such reliable communication, especially when you are in a foreign land and don't know the language very well! She made it possible for us to have a great time and have a problem-free visit.
I highly recommend this location.