Fantastic location, great apartment BUT don't stay here if you're a light sleeper or run hot at night!
This is right in the middle of downtown Porto so there is A LOT of street noise. We also stayed there when it was really hot and there was NO AC and Paula didn't provide us with a fan for the first night. We opened the windows but it was wayyyyy too loud to sleep. Probably one of the worst sleep nights ever for me.
After we got the fan, we had a very pleasant stay. Apartment was great - spacious, clean, had everything we needed in a great location.
Oh and also the check-in was a bit confusing and annoying so just make sure to message Paula way in advanced before you arrive.