Lunch or breakfast, wine, atmosphere, art, kids/family
Their menu is likely to change from season to season (as all good menus do) so bear in mind that the barramundi might not be on the menu when you go.
Lunch in spring/summer looking out over the vineyard really is a pleasant way to spend an afternoon. Outside, Tables and umbrellas adorn a timber decked verandah, then spill out onto the grass. Be prepared to eat you lunch looking out over a lawn haphazardly furnished with children playing various ball sports and having a whale of a time.
However, don't assume that Hayshed Hill's restaurant charms end with lunch, they are one of the very few wineries in the region that do breakfast. And it's good breakfast, accompanied by a relative rarity in the Margaret River Region, good coffee.
Hayshed Hill is lovely. It's lovely with your family, it's lovely for a Sunday lunch with the girls. I've never had something that even close to resembles a bad experience there. However, it's not exactly a place that I would describe as "Margaret River's best kept secret." It's a pretty popular place for lunch and brekky, so if you're heading there on the school holidays or a weekend, it's always a good idea to book, just in case. If the weather's going to be fine I'd recommend asking for an outside table.