Really nice, big house in Fiumicino, so it's near the airport, and the guest room is spacious and comfy. Kevin was very friendly and accommodating, and he drove me to and from the nearest station and to a nearby restaurant for dinner one night.
The one problem is that it's quite remote - the nearest train station is Ostia Antica on the Lido, which runs infrequently (every 15 minutes). It's a 5 minute drive away or about a half hour away by foot, but it's dangerous to try to walk there. You can take a taxi to the station using the FREE NOW app or ask Kevin to drive you there and back.