We stayed with our 18month old baby, it was very easy to get to from Fiumicino Leonardo da Vinci airport, quick train ride to Roma Trastavere station, and 400m walk up the road to the flat.
We arrived a little early and the cleaner was still preparing the flat so Francesca took us down for a coffee and a pastry in a great little pasticerria below the flat (try the dainese, delicious!).
The flat is lovely, very light and spacious, be aware if you're using the sofa bed too the bedroom and sitting room are separated just by a curtain but it was great for us. It has table and chairs on a large terrace balcony which were nice to eat on. Comfy bed, although it was a little noisy even on the 8th floor, but it is Rome, the only quiet place we found was on the top of Palantine Hill!
For getting around it was great, jump on the number 8 tram to Piazza Venezia, to get to the Colosseum, the Forum etc. Or you can walk up the banks of the river which was nice too. First night I recommend the little restaurant on the corner outside the flat. There is a supermarket just outside too.
We had a great time, it was easy with the baby too, I recommend a baby carrier for the roman ruins as it would have been a bit of a pain with the stroller.
Molto grazie Francesca!