We are first-time visitors to lovely Lisbon, and staying in Alexandre's apartment was an excellent choice! It is a lovely, very clean, comfortable spot at the lower level of the historical Alfama neighborhood! Within walking distance there are many shops and excellent restaurants, and the streets that you most definitely will enjoy.
Alexandre was very accommodating, as much as he could, to some time requests we had. His cousin Filipa waited for us when we arrived, and she gave us some very useful information and had such a friendly demeanor, my daughters wanted to hangout with her in lovely Lisbon :)