Joao's place is a perfect base from which to explore Lisbon -- it's centrally located but on a quiet, charming street, it's spacious and comfortable, with a lovely and unique terrace looking out over an old schoolyard out back (where a neighbor keeps chickens and ducks, which were fun to watch), and Joao was a great host, easy to communicate with, attentive to requests and questions. Would definitely stay there again.