i can only recommend this place! the cute little old house was tidy and clean upon arrival, and had the basic amenities and small functional kitchen, one might need on their travels. the communication with our host was friendly and quick, and they were very flexible with our late check in! it's located in a little hidden enclave of houses down an alleyway behind the taller apartment buildings, which shelters it from the big road out front. also it's 10-20 min walking distance from most of the things you might wanna see and do in old Porto. we also found great local places to have breakfast and lunch nearby, a bakery called bread&breakfast up the hill, and Fontainhas cafe down the hill overlooking the river, for the best(and cheapest) franzensinha and coffee we had in porto!
if it will be available, i will for sure stay in Jerónimo's Airbnb next time i visit Porto!