Staying at Francesco's place was a wonderful experience. He is great and caring host who provides breakfast every morning with freshly made and strong espresso and he even provides a bike. Testaccio quarter is a popular district with very good restaurants and also sights of interests such as the Ex-Mattatoio or the non-catholic cemetery. The neighborhood is lively, away from the masses of tourists, yet still very central and close to the river. Also public transportation is very good but with the bike it's just a 10-15 minutes ride to the Tiber island or the Colosseum.
The room is quite big and has everything I needed. Francesco was always considerate and also gave me good advise on bike trips. No wonder Francesco's place is so popular! Grazie, Francesco!