My friend and I had a great time stopping in Sofia's apartment, which was a perfect size for us. The apartment is in a great location for accessing the rest of Lisbon and having a unique feel in the narrow streets of the Alfama area. There was a fantastic view to wake up to, and music drifting through the windows in the evening. The housekeeper Helena who met us to show us where the apartment was did so late at night because of a delayed plane, and she was really responsive and friendly - it was easy to check in and out. Everything was clean, the kitchen and bathroom are great, and the apartment has a nice feel to it. We enjoyed the wine, coffee, and tea provided thank you! I also enjoyed one of the books.
We followed some of the recommendations for restaurants (one based entirely around mushrooms was delicious) and can recommend new places too: a Dim Sum restaurant, a homemade ice cream shop, Copenhagen Coffee Lab for breakfast, and the cafe on the nearest viewpoint area for aperitif/digestif are all within 5 minutes walk up hill.
The apartment is up a couple of narrow staircases and a fairly steep but short hill, which may be a consideration for anyone with a lot of luggage or accessibility concerns. It may be best in cooler months with no bedroom windows or air conditioning, though doors can be left open for air to flow through from the lovely french doors with small balconies in the main room and shutters will block out the heat in the day.