It's great to make plans for extended stays, but sometimes the most wonderful places are unexpected and a surprise. Is it the place, or the people we are with, or the frame of mind we are in while we are there? Perhaps it's the combination of these things. These wonderful experiences can't be planned, but we have to be ready for them when there present themselves. My suggestion is to stay longer when you feel the time it right, wherever you are. You can also spend extra time in a place by arriving early after a shorter walk. Some of my favorite days were in Ponferada and Samos. We walked 2 or 3 hours and arrived late morning. Spent the day resting, getting caught up on laundry, did a bit of sightseeing and had a nice meal. Felt rested and restored, ready for more walking the next day. These were not planned, they just happened.