Pam's flat is on the first floor of a lovely old building in Bairro Alto, a perfect location to explore Lisbon. It is walking distance from most of the city center - although it was a nice experience to take tram No. 28 to the castle. Public transportation is close by, not only the tram but also the metro and buses. Be prepared for elevations when walking, this is Lisbon after all :)
The flat is not huge but perfect for a couple. The bed was comfy, though it might not be long enough for very tall people (above 1.90 m) :) Since the tram passes right under the window, be prepared to hear it until about 11 pm and from around 6-7 in the morning. It isn't too disturbing unless you are used to sleeping in complete quiet.
Pam and Daniel were lovely hosts, very responsive and friendly.