$60 extra for an ocean-view room sounds about right for my experience in Hawaii. It's not so much the view I like, but the sound: there's something wonderful about falling asleep with the door open (screen closed!) and hearing the ocean...your garden view room may only be able to hear cars in that parking lot.
But even as much as I like the ocean view, I'm not sure I'd pay $60 for it. I've been able to use the 50%-off hotel coupons every time I've stayed at a Hawaiian resort, which made the difference only $30 (also brought the room rate down from exorbitant to merely expensive

). At $30 it was a no-brainer; on my last trip where a companion questioned even that expense he had to admit once we got there that it was worth it (especially at only $15 each per night). But since you'd be paying both halves of $60, I'll admit I'm not so sure...