Helena's apartment was a perfect fit for us for our trip to Porto! Location was just what we needed, very walkable, but also right off of the subway station and lots of busses. Helena was a super friendly and responsive host, reached out the day before our check in to make sure we have everything we need.
One note, not necessary made our stay worse, we happen to come to Porto at particularly cold time and as a lot of houses in Porto there was no heating and it was pretty cold inside. there were bunch of blankets and a space heater that helped.