Ana's place is super centrally located, very functional and fantastic for a gateway in Porto. You will be 1 min away from Sao Bento station with plenty of cafes and shops. Ana is a fantastic host, quick in her responses and ready to guide guests with recommendations both for food and activities. The self check-in/check-out is very simple and the welcome gift was also a nice touch. The only thing to note is that WiFi doesn't work well in the apartment but considering how pretty the city is, you probably won't be much inside anyway.
I thoroughly enjoyed my stay at Ana's place and would gladly come back next time I am in Porto.