Awesome place close to Bairro Alto and center, yet quiet neighborhood, station of traditional old tram very close by, metro and train station (e.g. to Sintra) also in walking distance. David is a very nice host and his lovely parents have a cute little store & café around the corner where we got the keys. The place itself was super clean and newly renovated, perfect for a couple or two friends who prefer a separate apartment at low budget. If you're not used to gas oven/stove you may want to ask right away how it works but there's also a microwave where we boiled water for coffee or did some food. Highly recommend place!!
P.S.: girls: high heels in this area are almost impossible so better bring some ballerinas or similar to go out ;-)