Everything was great! And the most excellent thing was everyday support from Loris. We lived with a 9-months baby and needed some special items and services (high chair, place to leave a stroller, extra clean floor, playard, delivery of online purchased goods) and all of them were provided. Although there are a few minor imperfections: old washing machine, creaking two beds in the second room, noise from a night club multiple times. Also you should pay attention to condition of any staff inside apartment prior to using it and fix any damages prior it become evident to the host =D or you will pay the whole amount.
We visited all major city attractions by foot (Colosseum, Vatican). Villa Borghese (2 minutes from apt) is the astonishing place to walk with a very nice caffe in Casa del Cinema. We recommend shopping not in the Piazza di Spagna area but on Via Cola di Rienzo.