Lovely apartment, ideally located and fitted out with everything you need for a stay in Porto. Having a kitchen was useful and I enjoyed sitting on the balcony with my morning coffee or with a glass of wine to watch the sunset.
Yes there are some stairs to get to the apartment but anyone of moderate fitness will be fine (especially considering how many stairs and hills you walk up as you sightsee the city of Porto).
Just be aware if you’re a light sleeper there is a lot of noise from the street below at night (cars, trucks etc). Otherwise it was a perfect stay.