We had a wonderful stay. The apartment location could not have been better for locality to the main spots, though be aware that with that comes some noise at night. Liu-Qi was one of the best, most attentive communicative hosts I have ever met, we were so thankful, they even sorted out luggage storage and airport transfers for us.
The apartment kept nice and cool and was extremely clean. A lovely space to spend out down time in while exploring Porto.