My corporate rate has the AC Ginza and the Conrad at around the same rate, $260 in November. It will be our first trip to Tokyo, family trip with a 14 year old. We'll likely do DisneySea one day then spend the other days exploring. Maybe take the bullet train to Kyoto one day. We'll likely get a second room for our son vs. trying to cram three in one (not to mention the 3rd person surcharge), unless there was a separate sleeping area, not just a cot pulled up into our room.

I am Platinum on Marriott and Gold on Hilton. I do have give suite night awards I could use if warranted.

Other rates for hotels I considered -

Prince Sakura - $215
Prince Gallery - $350
Aloft Ginza - $140
Tokyo Marriott - $171

I was considering a splurge on the Park Hyatt at $900 and squeezing into one room, but I have no status with Hyatt.