We had a fantastic experience in this lovely apartment in the heart of Alfama! The view of the ocean is beyond beautiful (especially mornings and evenings before the cruise ships arrive), and the apartment is very spacious and comfortable... just like the pictures. We did not meet Maria and Filipe but they were incredibly quick to respond to messages and the self check in process with the lock box was easy and stress free for our early-morning arrival. The location is a very convenient walk to the downtown area as well as public transit and all the charm of Alfama: lots of cafes, great restaurants, and azulejos. I wish all my air b and b experiences will be as wonderful as this :)
One note on Alfama: just be aware that this is a very old neighborhood and not a good fit for visitors with mobility issues or difficulties with steep stairs/uneven surfaces.