Cozy apartment in central Lisbon, not far from the Rossio square.
It's very well connected to metro and busses (even nightbus 208 to the airport isn't far away).
The local neighborhood is rather residental, but still full of little shops and restaurants. Just prepare that its on a little hill, so you need to carry your stuff uphill for a bit.
Only negative point about the neighborhood: If you have one of the rooms at the street, it might get noisy at night when the windows are open, as there is a bar right next door and people hang out there at night.
You can close the windows of course, which helps a lot, although I prefer sleeping with open windows.
The apartment (at least the one I was in) itself has everything you need. A fully equiped kitchen (coffee-machine, fridge, stove, oven, water-boiler), a nice little bathroom, two beds, a van and a TV.
There is even a little outside-area (in the courtyard) with tables to sit at.
Rita, the host, is a very nice woman, uncomplicated and was very supportive!
So my conclusion: A great place that I would recommend, but perhaps bring earplugs if you intend to sleep with open windows ;)