I had a great stay in Ana Paula and Carlos's apartment. The place is stylishly decorated and well-appointed, and has everything you would need for a shorter or longer stay (I was there for two weeks to do work at the nearby AHU and AHD). There is a Pingo Doce supermarket across the street, which is extremely convenient and allows you to save a lot of money on eating at restaurants. The neighborhood is less touristy than some other areas of Lisbon, but reasonably close to the center via public transit (especially if you walk down to the stop at Hospital Egas Moniz). Ana Paula and Carlos were extremely responsive and always ready to help if I needed anything. I would absolutely recommend their apartment to future visitors!