We stayed at Casa de Hera as two families in January. The house is at a great location and has tons of character. There are three floors and a lot of stairs involved but this adds to the fun and character. Although it is not shown in the photos, all rooms has air conditioning, which kept us warm during cold winter times. The house is very close to Ribeira and the area is mostly quiet during our stay. We rented a car to visit Douro and didn't have any difficulty parking outside. We suggest a visit to Taberna do Barquerio which is a simple restaurant just under the house with delicious food and great hospitality.
Carlos was prompt on answering our messages, Vitor was very helpful and the check-in was swift. Strongly suggested!