We had a great time staying at Sérgio's place. Joana was very helpful at checking, giving us loads of tips of things to do during our visit. The apartment had everything we needed and we got to enjoy the sun on the balcony. In terms of location, you're near the Rato metro station, a few buses and the 24 Tram. It's a 15 minute-ish walk to the Campo De Orique market and you're close to Jardim da Estrela. If you stay here we really recommend going to Forno D'Oro nearby - amazing pizza.