Joel's place is gorgeous and really close to the metro and historic center. The location simply can't be beat. A few things negatively impacted our stay there - the heater was missing (rectified the next evening, but that was a cold night), the washing machine first had no detergent so, not having packed laundry detergent, I took time to go shopping to buy some but then found the machine was broken. Not exactly Joel's fault and not something that could be fixed quickly, but we'd been counting on doing laundry. And last the router seemed to be going out on the wifi. I could sometimes connect, but after 2-10 minutes it would say "connected, no internet." It would usually work again for a few minutes if you unplugged and replugged the router. I've had this problem before at my own house and it's the router - needs to be replaced. We had no trouble connecting to wifi at the next airbnb with any of our devices. 6 days is a long time with no working internet :(
The heater has already been replaced; hopefully the washing machine and wifi can get fixed soon too. Then it will be once again a lovely place to stay in Porto.