Charles&Marlene are the real definition of superhost. I could not expect anything more from what i've seen. Their place is absolutely perfect for a couple, cleaning is one of the strong points, the position is the best to reach easily every part of Porto and the nearbies. I read disappointment in some reviews about noises during the night, or the loud cries of seagulls, but according me they're totally in the range for a port city, so I didn't mind about it.
I hope my future experiences could be as good as this one! The best so far!