Hi,

Luca and his girlfriend Nicole were very nice and pleasant.
One of us arrived earlier, which did not caused any issues with the hosts. They picked her up at the train station and showed her the apartment and gave her a lot of tips and a bottle of wine :).
My girlfriend and I met them on our last day. They welcomed us with a hot espresso and helped us with the direction to the vatican and later to the airport. Luca and Nicole are very helpful and informative.

I would like to add that the appartment is very nice and clean.
It is perfect for two couples (or even more...). You can access most of the city by walking from this appartment. The vatican is only a couple subway station away.
The access to the rooftoop is awesome. You can spend nice summer evenings there.

We had a very nice stay at their place and would heavily recommend them to anyone.