What a charming place. It's the architecture I look for whenever I visit Lisbon: high ceilings with full-height window-doors. And the exposed wall separating the kitchen is hundreds of years old, adding so much character. It's spacious, with plenty of room to stretch out on vacation. Beds were comfortable, and the bath amenities were nice. If you're from the U.S. like me, look up the symbols used on the washing machine so you know what each setting is; it's essentially separated by type of fabric. Constança was super responsive, and even came over when we thought there was a plumbing issue that turned out to be nothing.
The location is fantastic. There's a great coffee shop right downstairs, and it's only a couple of blocks to great restaurants (try Java -- rooftop restaurant with fantastic Mediterranean food and views of the city and river). There's a beer bar on the street below, and people will be outside talking late at night, but the windows are double-paned, so you don't really hear them with the house closed up.