We had a very nice stay at Mathieu's perfectly located place. We were welcomed nicely with a pastel de nata and Mathieu offered us a nice breakfast deal in the coffee bar downstairs. We were especially surprised by the detailed map and booklet Mathieu made to guide you around Porto. It shows all places to be, see, and eat.
Note that this is really more of a room than an appartment with a bed/livingroom and a bathroom - no more. With the Porto weather and environment, however, this is all you need.
The only inconvenience in the appartment we had was in the bathroom. The shower curtain closes very poorly, resulting in a soaking wet bathroom. The bathroom door does not close properly and the only window there is to the bedroom. Minor details according to us, but good to keep in mind.
Thank you, Mathieu!