This is an extremely comfortable and well kept place. Air con works well, immaculately clean and tidy. Very handy for walking into Porto (about 25 minutes). Marcos was extremely helpful when we arrived, texting us instructions on how to find it. We made some mistakes, but he set us right.
There was a festival on, which meant noise levels were high until 4am. This is beyond Marcos's control, of course, but you might want to avoid weekend of St John's festival (23rd June) if you want to get some sleep. Or maybe not if you like to party all night!