For something very different, and definitely on the romantic side, look into the
Crystal Quail in Center Barnstead for dinner. It's expensive ($75 fixed price per person), and you bring your own wine (no corking fee), but I'd say it's worth every penny. You absolutely have to have reservations, but I think you're reserving for the entire evening. We brought a friend there once from Seattle (a city with a LOT of good restaurants). The Quail's "hosts" treated us like royalty for the full 3 hours (!) that we lingered, and our friend can't stop talking about it.
http://crystalquail.com/home.html
https://www.yelp.com/biz/crystal-qua...sq=Restaurants
See Yelp reviews (link above), for a sense of what this place is all about. [Note: Not a single review less than 5 stars].