A realy nice appartment at groundlevel. The kitchen has all the basic stuff one needs, and since the food in Lissabon is so good, there is no need to get extravagant in the cooking yourself :)
The busstation is only a few steps from the house and takes you near the most important places.
We manly used the appartment during the evening/night since we were sightseeing at day. If you are going to stay most of the time in the appartment, be aware that you can look from the street into the appartment (since it is at the groundlevel), but there are curtains before every window. (And you have no stairs to walk :)