Maria send a lot of detailed helpful information about Porto and how to get to the apartement. We didn't meet her in person, but a friend of her who was very friendly and welcoming and waited very patiently even though we arrived very late and much later than planned. Thanks for that.
The apartment was clean and tidy and had everything we needed for the one night we stayed. But there are some aspects I would like to mention. The bathroom was cleaned but has a mold problem at the ceiling. The shared sitting area is in the same room with the bed of another guest which is separated by a screen, but which cannot get used when the other guest is sleeping. The kitchen can only get accessed through that room. Staying in our bed room would have been no option because it was very small and just ok for sleeping.
All in all for us it was ok to stay for the night, especially for the price.
I would recommend Maria anyway with the given aspects in mind.