We really enjoyed our stay in Alfama. The location of the apartment is fab, the breakfast is amazing as the other reviews say and the bathroom/kitchenette very clean.
We didn't actually know which apartment we were going to - we had the code for the main entrance and our apartment but I put the code into another door before noticing "P" for Patio (?)..just a heads up!
We have suggested that the host buys a dehumidifier for the room, as there is a slight smell in the room and a dampness to the bed linen. Hopefully this will help fix it.
We loved our stay in Lisbon and thought the location of Alfama was a perfect place to stay so we would recommend Casa Sao Jorge.