We stayed 4 nights in Joana's brand new apartment in the center of Porto. The flat is very cute, in a typical old building, with a balcony on the street. The bed is very comfortable and the bathroom is very clean. The sofa bed is not so comfortable but for a few nights it is ok.
The breakfast at the pasteleria is delicious! The location is perfect, it is close to everything within a few minutes walk.
Highly recommended for 2 or 3 people.