Me and my husband spent 2 nights in the Story Flat. The location is perfect, central, in a popular part of Lisbon, but still very quiet (we slept very wel!). The apartment is nice and clean and the view from the window is magnificent. You'll find everything you need and the bed is comfy.
We didn't meet Ana and Rita in person, but the communication by mail was no problem. We received some usefull tips by mail. We arrived early in the morning and requested to check in earlier, that was no problem (a lady who is helping with the apartment was waiting for us). The last day Ana and Rita helped us to book the taxi ( the taxi to the airport is very cheap, about 15 euro!) so our departure was relaxed.
We enjoyed staying in Alfama very much, it's packed with history, full of little shops and reataurants. We recommend exploring Lisbon by walking, there are so many pittoresk streets and places! We'll certainly come back!