Had a chance to stay here for almost 5 weeks and I would have to say that it's one of the best places that I've stayed in for a longer period of time.
It's well located, comfortable with lots of space, gets good sunlight, good kitchen to cook with and was really conducive to work at!
Also this is in addition to the fact that Dario was extremely friendly and helpful!
I would recommend this place to anyone who is visiting Lisbon especially for a longer period of time. (although I almost don't want to since I would like to stay here the next time I come too!)