The location is great! It's right on the Rua de Flores in Porto with all the shops and restaurants. The down side is that it can be rather noisy. I used earplugs and didn't have any problems.
The bed is comfortable.
I was there during a heat wave with temperatures as high as 100 degrees F (38 C) and I don't believe the room is air conditioned. However, with the thick walls the room stayed quite cool and comfortable.