Amazing location, right in the middle of Graça, which is really one of the best places to be in Lisbon. It's hip, beautiful, good vibe, but also very livable (certainly less chaotic than somewhere like Bairro Alto).
Andreia and Tuty were super friendly and great hosts. The flat was clean and nicely decorated, if a little smaller than the (amazing) pictures online suggest. The space is used creatively though, as should probably be expected of many of the flats in the Graça neighbourhood.
We enjoyed our stay very much.