João’s apartment it was specious, bright, and clean, in a quiet neighborhood and only 10-15 min walking distance from the sightseeing places in Porto. João sent us a detailed email how to check in prior to our arrival and explained how to use keys to garage door - very convenient if you travel by car - and get to the apartment.
There is a big shopping center few blocks from the place that has a supermarket as well to buy water, fruits, etc. lively pedestrian street with the shops and great small cafes for the morning breakfast or dining out.
The only concern we had during our stay was the water pressure (it was ok) at the shower and minor touches that could be easily taken care of, like having extra towels (you can not refresh existing ones since there is no washer) and perhaps paper towels in the kitchen if one decides to cook.