Filipa's apartment was lovely - even better than the pictures suggest. The apartment is on the top floor of a building in the historic Alfama district. There is a spacious bedroom and bathroom on the first level, and a lovely living/kitchen area above it, with a spectacular view. When I arrived everything was spotless, with towels, bed linen etc. all waiting for me. Filiipa's husband Antonio did the check-in and was great.
The only minor problem was finding the place, because it is hidden away in a very small street in the labyrinthine area of Alfama. I had planned public transport to the flat online, but when I got to the airport the bus stop I was meant to use didn't seem to exist! Guides at tourist information points didn't seem able to advise me on this. During my stay I didn't find one person or taxi driver who knew where the street was! So I would advise carefully planning your route to the apartment for check-in. Maybe just get a taxi to take you to Rua das Escolas Gerais, which seems to be the closest street they can drive down.
Having said that, it was great to be staying in the heart of Alfama, because this is really an area that should be explored. There is a great cafe around the corner for breakfast, and the area around the Museu do Fado, with lots of restaurants, is a 5-minute walk. It's about a 20-minute walk to the central Rossio Square area, which I was more than happy with.
Filipa was communicative and ready to answer any queries throughout. The flat was sometimes just a little noisy - there are neighbours downstairs with a dog who barks a lot, and early one morning there was some building work going on. But that's a minor quibble.
Overall I had a fantastic stay at Filipa's place, and would recommend it. An ideal way to see beautiful Lisbon!