Hi Joaquim,
your appartment is really the perfect place to explore Lisboa from, and I can also recommend it to people who are for work there. It is central without being too much in the touristy district (not many rol-suitcases :-)) And with your and Nuno's advise, I visited a few very nice places and restaurants.
I was also at a conference, and really enjoyed being able to go 'home' after a long days work - not having to stay in the huge conference hotel was such a relief. It made me see much more of the city, which I always enjoy enormously.
Hoping to be back some time, either for work or for pleasure,
thanks again! Saskia