Giancarlo's flat is well located, five minutes walk from the Termini train station and close to Metro, bus and tram stops. It is spacious and quiet - and felt safe. The flat is on the third floor but you first access it through a central hall area with a porter who was helpful. There was a lift which was really useful. Giancarlo's directions about access were detailed and he was quick to respond. He gave us some great recommendations about restaurants - we particularly enjoyed Trattoria Vecchia Roma - about five minutes from the flat - although you need to book. We'd recommend you call by in person - or be prepared to wait in the queue. We also ate at the Mercado Centrale just by the station, again recommended by Giancarlo. Lots of choice of different types of food and a great atmosphere. We would also recommend the Trattoria Monti - close to the flat. You also need to reserve here.
Overall we would really recommend Giancarlo's flat and would book it for our next trip to Rom