The place is what we wanted exactly: comfy and calm. The surroundings are also wery calm, except for the planes that go to landing to the nearby airport, but this is something that we got used to very quickly and definitely was not a problem for us.
We also liked that there weren't any problems with transport, we never took a taxi, at least 2 metro stops from two different lines were nearby together with the railway station.
We definitely recommend "Lucimar" - a place nearby with typical pirtuguese cuisine. We were really lucky to find it, it's very tasty there and quite cheap. The owner of the place is a very nice man, asked us to bring magnet from our place when we next come to Lisbon :)
All in all, it was a great stay!