Very nice area, quiet and strategically very well located near all Lisbon's interesting quarters. We stayed with our two kids who liked the apartment as well. Clean place, which has all the necessary things you might want during your stay. Nothing was missing. Very fast wi-fi, TV with plenty of channels. Big bathroom, big kitchen, spacious rooms. Very comfortable beds.
There are plenty of mini markets around, nice tavernas close by. One of the most popular seafood restaurants is on the corner. We walked couple of times until Bairro Alto, which is around 20-25 mins walk. Metro station Martim Moniz is 10mins walk, with a big square and bakery, cafes and departing station for most famous tram 28. Host Helena was very helpful, being in touch with us and providing informations about the places in the city whenever we asked. One of the best hosts we had until now.
Definitely Helena's apartment is worth of visiting - you won't make mistake.