Everything was more than expected: the whole family was waiting for us, showed us everything in the flat, gave us different maps of the city and prepared also with fruits and a bottle of wine. We felt ourselves at home immediately. :)
The flat is in the middle of Alfama, one of the best place to explore Lisbon, in a lovely little alley. The famous tram 28 is just around 100 meters and you can find everything in the neighborhood: restaurant with live Fado, shops, cafe, etc. I highly recommend this place for everyone.