Great apartment - works good for two families and location is great - easy to get into city centre with tram or bus. Kitchen well equipped and cosy living room. Note: the bunkbed room has a connection with one of the double rooms (no issue for families but might be if group of fruends). one double room is without window.
The location of the apartment is very good - note you are not in the part of Trastevere with the bars/cafes but a bit further out. Close to Testaccio market. Pasticceria Giuffre close by is great for coffee/pastries in the morning.