All in all we've had a good time during our stay in Porto. The flat was large with shared kitchen, bathroom and living room. The Check in was easy and the hosts are friedly and punctual.
Still, the cupboards in the kitchen were not clean at all! Also in the bathrom we've found hair from previous guests...
Additionally, we've booked a room with private bathroom and got a smaller room in a different flat (but inside the same building) with shared bathroom. As there were no other guests in the flat during our stay, this was ok for us, but still not what we've expected