We had an Ok stay in this modern apartment in a renovated distillery building that has a wonderful view of the Douro River and across to Porto. Walking to Porto is quite a trek and Gaia Port houses more moderate, but we had a car.
The Good: Great private view, comfortable beds, good heat/AC and hot water, and mostly modern appliances. Good building security and 2 parking spaces.
The Bad: Beds are not King size. No house manual or instructions on how to locate the gym, trash disposal, or helpful recommendations for places nearby. Confusing light controls. We wasted an hour after Google sent us to the small Continente grocery in Porto, when it turns out there is a huge one located in the very nice Gaia Jardim mall about 10 minutes away. There are no stove instructions and the microwave has been replaced with a non-digital one. 5 light bulbs were out and required replacement. The deck and furniture have now aged and 2 boards had buckled causing a trip hazard and a chair slat broke.