The flat is nice: big, clean and in a good position. It's perfect for 4 people because the rooms are quite big and the living room is ok! it's located in a very confortable position in Alfama, really close to Museu do Chiado and 5-10 min walking from Praça do Comercio. The guy who shows you the flat, is kind and available for advices and explanations.
For sure, I recommend it for enjoying the city!! Ciao!