We had a very good time in Porto. The apartment is spacious and has everything you might need. Balconies are great and the airco is perfect (we only put it on an hour before we went to bed). Check in went a bit chaotic. As described it was about 20 minutes walk to the city. No problem for us, although in the evening we often took an Uber back (around 3 euros). It might be helpful to put an information map with closest supermarket, bakery, etc in the apartment as the woman who checked us in didn't have time to tell us things like this. Next time Porto we would choose an apartment more down town, but that is of course very personal.