Downtown Grand Rapids was built for offices, an arena and hotels, and it feeds accordingly: capable, busy, unremarkable. The kitchens people are genuinely enthusiastic about sit outside that ring.
Wealthy Street, running east from the edge of downtown through East Hills into Eastown, is the spine. It went through a long decline and a longer recovery, and what came back was a string of owner-operated restaurants, a repertory cinema, bakeries and bars in narrow storefronts. It is about a mile from the hotel cluster, which is twenty minutes on foot uphill or five in a car.
Monroe North, on the east bank north of the arena, is the other direction: warehouse buildings, taprooms, a handful of restaurants, and a shorter walk from downtown.
The West Side, across the river along Bridge Street, is the third option and the least polished, which some couples will prefer.
Two practical notes. Reservations matter more here than the city's size suggests, because the good rooms are small — thirty or forty covers is common. And a Van Andel Arena night reshapes availability across the whole downtown, so check what is on before you assume a table.