This place is amazing. Stay here if you can. It's a stylish spot with a bedroom and a small loft but it feels spacious. The location is perfect - you're right in the middle of the best part of Porto and a few blocks down to the river. The walls are stone and there are 3 layers of windows (2 actual windows and then shutters) so it's quiet at night and even after the city starts to wake up in the morning.
On the 2nd floor (1st floor counting by European standards), there is an elevator. The beds are both queens and are good solid mattresses. You won't regret this one. Highly recommended.