Gio is a fantastic host and has a beautiful place (the nicest and most interesting apartment I have ever stayed in), with lovely views over the Piazza del Carmine. It is very centrally located, so you can get to lots of nice nearby restaurants, bars, churches and museums very easily. One thing to bear in mind due to the central location is that on the Friday and Saturday evenings outside on the piazza can get a little noisy. But all other times it is silent.
10/10 overall - a wonderful stay.