We had a lovely time staying at Gonzalo's home. It was indeed a great location, full of life with some of the best areas of Lisbon. Even though that area is always buzzing the soundproof windows make it perfect for a chilled evening without hearing anything and guarantee a good night sleep :)
I would recommend without hesitation if you wish to be in the heart of Lisbon, closer to traditional neighbourhoods and main areas, we were literally a step away from everything.