Unfortunately Sandra couldn't greet us, but one of her friends gave us the keys. Later she came by but that time we were already out for our late diner, so she left her small present at the doorstep :)
The flat is in an old building on the first floor, in the center of the city. Very easy to access from Rossio metro station (after climbing a little hill with some steps, but that is usual in Lisbon). In the flat you have everything you need for your stay (nicely equipped kitchen, comfortable bed, heaters, umbrella etc.) The only handicap: the shower area is really really tiny, and if you're a light sleeper the noise coming from the neighbouring restaurant's terrace might disturb you.
I really recommend to stay in Sandra's flat. LISBON FOREVER! :)