We had a great stay at Leopoldo's place.
Leopoldo picked us up at the metro station when we arrived in Rome. In the morning he made us a nice, nourishing breakfast with his cappuccions and espressos and his homemade 'pastiera napoletana' - which was absolutely delicious! - and he gave us lots of advice on where to go and where to eat in Rome.
Leopoldo's apartment is just a five minute walk from the nearest subway station, it's clean and tastefully furnished. Our room was very spacious and had a balcony and a bathroom attached.
We highly recommend Leopoldo to any prospective guest, and will definitely stay with him again if we go back to Rome.