Excellent location and value, right next to a main road and the Dom Luís I bridge. The area is very safe, there's plenty of tourists during the day and nice and quiet at night. There is easy access to the bridge to cross into Gaia, as well as being close to the funicular for coming back up from the Ribeira level (Ubers are also very easy to get).
The building has an elevator, which was great for carrying up luggage, and the outdoor terrace was nice for eating breakfast and having our coffees in the morning. Plenty of space to move around, and having a second half-bath is great if you have a larger group.