My friends and I surely enjoyed our stay in Porto. Jorge's apartment turned out to be a decent home for the duration of our stay. The only serious downsides were pests (some roaches and small flying insects) and the lack of grocery stores nearby.
Other than the pests the apartment was clean and nice, it's location was decent too: just a few minutes away from the port wine cellars and maximum 10 minutes away from the city center.
Communication with the host was great, got no complaints here. They were even able to organize personal late-night transfer from the Airport (check-in included) which was very handy.