I cannot praise Sergio's flat too highly. It was the perfect base for me in Rome.
It is located in a suburb which, by public transport, is about 40 minutes from central Rome. The trains and buses are very economical, frequent, comfortable and easy to use and, in this location, Sergio is able to offer you a superb apartment at a price that, in central Rome, would get you something roughly the size of a shoe box. For me, the choice was a no-brainer.
The flat itself is really a little home from home - bright, cheerful, clean and comfortable, surprisigly spacious and better equipped than virtually any place I've rented in 4 decades of self-catering holidays. These things are very important to the self-catering guest so I'll list some of the things that I appreciated in Sergio's flat that I have often found wanting in other properties:
Lots of spare towels
Lots of spare bed linen
More than enough clothes hangers in the wardrobe
Plenty of storage space for your belongings
A very large American-style fridge and freezer (with ice maker!)
Speedy and reliable WiFi
Every imaginable kitchen utensil, cooking pot and item of crockery
And - very important to British visitors! - a kettle and large tea/coffee mugs
The suburb in which the flat is situated is not a tourist location. It is very ordinary but this means that it is well provided for with amenities. There's a shopping mall further up the road with a good supermarket. There is also a cinema for those whose Italian is better than mine. There are a handful of good local restaurants, cafes and bars (charging far better prices than those in the city centre).
I rather enjoyed the feeling of living in a community of ordinary Romans for a week and found the people welcoming and courteous.
Sergio and his family were very helpful and responded rapidly to any queries.
All told, I could not have asked for a better accommodation.