We had a great time at Villa Guilia. It was everything we needed for our 2 toddlers and my husband and I. Only thing to note, it is actually part of the hotel diodoro which was not clear to us on this site. Best to just communicate directly with the hotel. Check in was smooth once we were there as you check in to the hotel, prior to that we weren't told the process etc. Wifi does not work in the room, only in public places and if you don't like stairs, this place isn't for you.
Other than that, we highly recommend this, serviced every day, right next to the amazing pool and 2 good spacious rooms within the villa.