The Coach House has always beckoned diners with its open-air seating and Edgartown Harbor views. Now there’s another reason to eat at this harbor-view spot: New chef Joshua Hollinger (formerly of Manhattan’s Tribeca Grill) has taken over the kitchen and revamped its lunch and dinner menus. But his real triumph is the Sunday brunch. Delicacies like sushi and boutique chocolates join an already impressive menu of berried French toast, eggs Benedict, and myriad savory salads. You may even find yourself forgoing the vista of passing sailboats to stare at the buffet instead.