If you want to base yourself outside of Rome, but wish to remain accessible, this is a brilliant place to be. There is a bus service from just outside the main gate to the nearest metro, but we had a car and drove a couple of kilometres to Frascati where we parked for the day for €5 & got a train to Rome for €2.40 return! The trains run reasonably late into the evening too and it made our day in Rome a breeze! Also a great location for visiting Villa D'Este in Tivoli (highly recommended!) which was our main reason for coming here.
The cottage is charming with a really homely kitchen dining area and a great coffee machine - the only one I've used that makes coffee taste as good as from a barista! Alessandro was a helpful and friendly host and responded quickly to all my transport queries during our stay! I'd definitely base myself here if I wanted to head to Rome again.