The food is superb, the service was perfect, and the ambiance is impeccable. It is not cheap, but it's also not the most expensive restaurant I've ever eaten in, either. I've been lucky enough to dine in many of the best restaurants in this country, and Spiaggia is right up there amongst them. It's not something you do every day, but for a special occasion, this is ideal.
Not sure what anybody would find wrong with this place. I think the negative reviewers are just more used to eating at Denny's. Not that there is anything wrong with that.