It's a lovely place in the heart of a quiet residential neighbourhood --- at the walking distance to most of the central Lisbon hills and lookouts; 10 minutes on foot to metro stations Anjos and Intendente, local buses and trams just 300m away. Steep slopes---reasonable walking shoes are a must.
The flat itself has all one needs, apart from central heating (which is very typical for Lisbon, though), something one might miss in the middle of the winter. The house is on a steep slope, and so one end of the flat is ground level, and the other ends with a big roof terrace. Supermarkets Auchan and Lidl are just 300m away.