This hasn't really come up in the discussions of Tokyo properties, but I'm hoping to visit in a couple of months and am shooting for a challenging dinner reservation. I'm wondering if there's any significant difference in people's experiences with the concierge team at various luxury properties in Tokyo--is anywhere going to be more likely to secure reservations? I've always found the Four Seasons Maronouchi to be very responsive, but they've not actually had much luck in securing reservations at spots where I'd expect I would need help in the first place (e.g., Quintessence or Sushi Saito).