We had a great 5 days at Teresa's apartment. It's in an excellent location - a stone's throw away from Rossio square/the Rossio metro station, and easy walking distance to Baixa, Chiado, Bairro Alto, and Principle Real. The apartment itself is cozy and ideal for a couple. The neighborhood was fairly quiet, especially at night. We weren't able to meet Teresa, but her son João checked us in and Teresa was responsive to messages during our stay. I can't recommend this apartment enough if you're looking for a relaxing stay in Lisbon.