We messaged the host about 1 hour prior to our arrival in Porto. We had to wait outside the apartment for about 1/2 hour before the host rep showed up to let us in. She apologized for being late, We were shown around the apartment and given a map where the host rep marked where points of interest/good restaurants were located. The host rep said that she would message us with additional information, including instructions on how to use the washer. We never received this information. We also found what appeared to be ants around the fridge, a couple of nights during our stay.
The apartment is in a good location - about a 15-20 minute walk to the tourist area. Having an outdoor patio was a bonus.