Grotto Pizza Tags: Beach Best of Delaware 20376 Coastal Highway Rehoboth Beach, Delaware, 19971 Phone: 302-227-3597 Website Restaurant Category: Italian Profile Let this business know you found them on Delaware Today's Online Directories. Locations Rehoboth Beach 20376 Coastal Highway Rehoboth Beach, Delaware 19971 Wilmington 1819 Pennsylvania Avenue Wilmington, Delaware 19806 Claim/Edit Listing