This little flat is a gem, located just 3 minutes walk from the Metro station or just walk along the waterfront to Lisbon main square, about 15 minutes. It's located in the picturesque historical neighborhood of Alfama. It has been recently renovated with a modern look and well equipped, it looks brand new, very clean, plenty of towels and WIFI was great, fast and reliable. The place is small but very comfortable for two people, it has a window with a great view of the river. You don't need a car, just walk or ride the metro anywhere in Lisbon. One observation, be prepare to walk several flights of steps to get to the flat, this seems to have been the norm at every place I have stayed in Europe.
Susana was in constant contact with me before my arrival and provided good information once I arrived in Lisbon.