We had a great stay in Cláudia and João's apartment. The flat was just as described - clean, airy and spacious - and is only a few minutes walk from the shops and cafes of Graça and a slightly longer walk to the historical district of Alfama. Tram and bus connections are also very close too.
Cláudia and João were excellent hosts, prompt and helpful in their communications, and they provided fresh towels halfway through our stay. The only issue we had is that the electrics for the apartment block are quite old - using the oven sometimes tripped the fuse box and we would have to switch off other electrical items when cooking. But otherwise, a perfect stay.