Very nice apartment, we have advised the owner to change the dish washer, but otherwise no complaints.
The apartment is placed away from the attractive part of Trastevere and in the middle of two train stations, which makes it a little difficult when travelling with small kids. The buses are OK but busy during morning time and hence can be difficult with a stroller.
The people around the apartment are very nice and we strongly recommend the place outside the apartment for a quick pasta or pizza.