East Dennis , Massachusetts
Tel: 508 385 6134
Concierge.com's insider take:
You'll find the Cape's best lobster roll at the Sesuit Harbor Café—that is, if you can find the restaurant. It's located in a weathered, low-slung building hung with lobster buoys at the back of a working marina. They say the secret is spices in the mayo, but whatever it is, it attracts not only tourists but fishermen and marina workers to the picnic tables set up in the back along the harbor.
Open daily 7 am to 8:30 pm, mid-April through Columbus Day.