Comfortable apt. about 10 minutes' walk from Marques metro station. Several buses stop at Marques as well, including one that goes to the beach. The beds were really comfortable. The kitchen has a full-size fridge and plenty of glassware and plates. The washer was really handy. The dishwasher is new. A bottle of port is provided; there are other wines available (tally up what you use and pay at the end). Coffee and tea are also provided.
Marta was very responsive and helpful with things like arranging taxis to the airport--including on a day when there was a taxi strike. She also came and fixed the wifi when we managed to unplug it without realizing. We had the in-house dinner with her mom and sister, which was really good.
The location isn't ideal; if you like to go back and forth to the apt during the day, it's a bit out of the way from the sights in the Old Town. On the other hand, it's also removed from the crowds. Also, there are few restaurants in the area. Those that are nearby are good, though, especially Estrella do Lima. The restaurant-heavy part of Santa Catarina starts about 10 minutes' walk from the house. There's a good pastry shop on the square at Marques.
There's a nightclub across the street. My bedroom, in the back, didn't get any noise to speak of but others did notice it sometimes. It doesn't open every day, but if you're a light sleeper, keep the windows closed or pack earplugs. The windows are double-glazed for noise reduction. It can be handy, as the taxi drivers know where it is--no need to attempt to give the apt address in Portuguese.
There's great airflow if you open windows due to the height of the building, and on a clear day you can see the ocean from the living/dining area. We didn't hear any noise from other apartments--the walls are solidly built. All in all, it's a good apartment for a group, especially if you tend to stay out all day.