We had originally booked this unit for 8 nights and had to cut the stay drastically short due to the condition of the apartment. There was black mold covering the walls and ceilings in the bathroom, the living room, and one of the bedrooms. There was water damage on the baseboards of the kitchen and hallway and evidence of mold in those places as well. The entire apartment was damp including the bedding. The fans in the bathroom and above the stove did not work. João was completely unresponsive when we had questions and when issues came up. Once we reported the mold to Airbnb, João showed up at the apartment, unannounced, and said he didn't see what the problem was, that he didn't want to discuss it, and said he regretted renting his apartment to us. We've been staying in Airbnbs for years and almost exclusively for the past 6 months and this is the most appalling experience we've had to date. The unit was unhealthy and unsafe to be in, the description was inaccurate in terms of amenities, and the host was unresponsive and outright rude. There are a lot of lovely places in Porto and Gaia, as we have now found, luckily, and this place should be avoided.