My husband and I stayed at Joao and Rita's place for 3 nights and everything was perfect from the start. Rita met us at Museo do Fado and took us to the apartment. She oriented us and even brought us a map with her own personal recommendations for things to see in Lisbon. That was AWESOME.
I have to mention the bed - it was so comfortable and my husband and I passed out an hour after we settled in. It's honestly the most comfortable bed I've slept in at an AirBnB!
The apartment is within walking distance of everything in Alfama (and the best pizza place in Lisbon, "Casanova"), as well as the metro to get to the other significant places in Lisbon. Rita took the time to explain to us which metro will take us where, and we were very grateful for that!
Overall, I definitely recommend staying here. It was absolutely wonderful.