The apartment was fantastic with a spacious living room and bedrooms. Something to be aware of is the kitchen is petite and difficult to accommodate more than one person. That being said it had everything we needed, especially since we only used it for making breakfast.
The apartment is located in a nice, centrally located area of Porto with reasonable walking distance to multiple light rail stations that connect to the subway, however the central location made it easy to walk to tourist sites, stores, restaurants, etc...
As noted in the description and by other reviews, the apartment is located on a street with about five bars and night clubs. We did not visit them but they look nice. During our visit the places did not get busy until late (may midnight) but they ended up with very large crowds until 4am. The good news is the bedrooms are on the opposite side of the apartment so there was no problem sleeping. However if you like to stay up at night watching television, the living room will have street noise from below.
The host were great. Alice could not meet us for check in but her husband Pedro did. He was very informative and shared lots of information regarding Porto. The best touch is the extensive notebook they created which lists many restaurants, not only nearby but also other areas of town that they recommend. The book eliminated a lot of guesswork of finding the best place for local dishes as it listed the type of food the restaurant specialized in and what price range to expect.
I would definitely stay here again on a future visit.