We stayed at Joao's place for 4 nights. The apartment was centrally located but it is quite hilly all around Alfama. However, uber is super cheap especially since there was two of us. The stairs to the apartment are quite steep so keep that in mind.
We had trouble getting in contact with the host and didn't receive check-in information beforehand. Download whatsapp if you want to get in touch with Joao.
We were checked in (about 20 minutes late) by an older woman who didn't speak English so we didn't get much information. The apartment only has a washer. We thought the apartment would have a dryer but we used the clothing line. There is no AC, so it was quite hot during the day, however, if you leave the window open, it's nice at night. They had one small desk fan for the space. I would recommend the host getting a bigger fan for the space.
The bed is hard but my partner and I didn't mind because we thought it was good for our back.
Amenities are bare. We were left a wine bottle to make up for all of the communication issues, but there wasn't a wine opener in the apartment. It was also french wine which I thought was weird since we were in Portugal.
The space was clean. Small but totally fine for a couple. Shower pressure was great. A tip -- keep the toilet seat cover down. Due to the heat and humidity, it has a sewer like small if left unopened.
Honestly, a hotel through Booking would probably be better and cheaper but if you don't mind small and bare minimum, this place would work fine.