The apartment is in a great location near the Ribeira! Joana was incredibly helpful on my arrival and provided many excellent suggestions for things to see and places to eat.
The bed is a memory foam bed. If you've never slept on one, know that it can get very warm. There is an elevator, but it only goes to floor 1, not floor 0. You will need to walk up one flight of stairs to get in. Some have said the street noise is loud. While sometimes true, I did not find this disturbing and the apartment was always quiet in the middle of the night. If you need to wash laundry, know that there is no dryer. The bathtub was a little challenging for me to get in and out of.
In conclusion, the apartment is simple, similar to the pictures, and comfortable. I would stay there again on a future visit to Porto.