Mariana and Nico's house was definately good because of following reasons. Firstly, hosts were helpful and extremely kind. Secondly place was quite cozy and very quiet. As a Roman Catholic believer, staying a place nearby Vatican was great experience indeed. Lastly transportation was good. You can reach via train and #64 bus. If you wanna stay in rome, ring Nico's bell. He will definitely guide you with full of kindness