A perfect trip !
We had wonderful two days in Monica's apartment. It is clean and the kitchen is well equipped with anything you might need. The terrace is really beautiful and was actually the reason why we've decided for this apartment and it was real worth it.
Although we arrived quite late (around midnight) Monica's daughter welcomed us warmly and took her time to show us around.
We didn't get a metro card but actually walked all the two days to colosseum, forum romanum, Vatican etc. which was absolutely no problem as the apartment is quite centrally located.
Thank you Monica for being such a nice host.