Elsa and Rui's apartment was the perfect spot for my girlfriend and I during our week in Lisbon. Alfama is a truly authentic neighborhood with plenty of small restaurants and shops along the narrow cobble-stoned streets. The apartment is just down the street from a major trolley line, which was awesome to see drive by throughout the day. If you don't mind walking, the other major parts of the city are about a 20-30 walk. There is also a major metro/train station about 10 minutes away. The apartment itself is perfect for two people. It was very clean and surprisingly very quiet at night, which was great after walking 10+ miles each day.
Elsa and Rui were phenomenal hosts. There were extremely responsive and very accommodating when we arrived early and needed to drop our bags. They provided many recommendations of restaurants, bars, sights, and neighborhoods to visit, which was extremely helpful for two first-time visitors. I would certainly stay at their place again!