I rested in Pamplona, which was very worth it. Wish I'd stayed another day so I could've walked the battlements.
I took a day of rest in the town just before Logrono (starts with a V, I forget it's name. Vienna?) in that I stopped early that day instead of pushing into Logrono.
Took a short day getting to Logrono, then spent the remaining 10 or so hours of it wandering around Logrono. Wouldn't necessarily do that again though. Cathedral is cool and all, and some 15 year old kids tried to hit me up for pot, but beyond that, not much of interest. The patriarchal albergue is super cool though.
From there, I'd gotten more used to the pacing and only rested in Burgos, Leon, Astorga, Santiago, and Finisterre because I wanted to see more of those particular towns than the average afternoon stay allows.
Just be prepared that, if you do stay an extra day in a town, be prepared to pay for a hotel room/hostel/whatever because some alberques won't let you stay if they see you've already got a stamp for that town from the night before. But really a hot shower of indeterminate length once or twice on the Camino is worth the 15 - 20 euros IMO.
I wish I'd stopped to see more of Sahagun, Meldive (?), and Ponferrada. Especially Ponferrada, it looked very nice with the river walk and all that, but oh well. Next time, always next time.