We loved Modestino's appartment. It's in a fun neighborhood, being a block from San Spirito which seems to be 'the' hangout spot for travelers and locals alike. Don't miss getting a pizza to go from Gusta pizza with a bottle of wine from asia market and sitting on the steps for a few hours. This does come with a bit of noise but it's fine with the windows closed.
All the sites are in walking distance. Wifi works. No luxuries here, but very clean, and bright.
Mode's a great host. Don't forget to ask him where his next show is.