Sandra was an excellent host.
Communication was prompt, and she was able to be flexible and let us check in early. Rita greeted us for check-in, and she was very helpful with lots of suggestions of what to see and where to eat.
The location is amazing -- right on a mostly-pedestrian street (but watch out for vehicles -- some are allowed with the proper permit) in the heart of the center of Porto. Near tons of restaurants and sights. Just a short walk from the Sao Bento train station.
The unit is modern and clean. It is a small space but includes an exclusive outdoor space including a gas grill and outdoor table and chairs. We did not get a chance to us the outdoor space, but in warmer weather it would be fantastic to cook and eat dinner out there.
Highly recommend staying at Sandra's place!