I stopped in Porto for the night and booked Helena's place because it was relatively well-located, simple, and a situation where I was likely to meet the hostess (something I like doing)... and basically an economical solution that fit my situation (including that I was alone). I expect a minimal and simple accommodation, and boy was I surprised-- The room itself is clean, big, well-equipped, QUIET... but what really makes it is Helena's hospitality and thoughtfulness. It's expressed in a low-key way-- You'll find everything you need in the room (for example if you forgot shaving cream), for example, and when I came back from my evening walk there was a bit of Port and a pastry waiting for me, and a big jug of homemade lemonade... It's touches like this that make SUCH a difference. When I told Helena how great she is, she just said "I'm Portuguese!"
Just came to mind-- The restaurant around the corner that Helena suggested was fantastic, generous portions of excellent food at very reasonable prices.
Next time I go to Porto, I know where I'm staying.