We stayed at Teresa's lovely, clean, airy, spacious apartment for 4 nights. It's in the modern part of Lisbon, close to the acquarium, the Expo 98 site, Oriente station and shopping centre, and the delightful, lively riverfront.
Being close to the metro (5 min walk), we were able to get to any part of the city within about half an hour. The metro is very cheap and easy to use, linking with the buses, trams and funicular railway.
We were glad of Teresa's useful tips of must see places in Lisbon, she was helpful and always on hand by text if we needed her. She really is a great host.