I am heading to Tokyo for a short business trip (2 days), but will also stay the weekend.

I plan on studying the city a bit more this weekend, but need to reserve a hotel. I like staying at Marriott brands for points and status (I have Platinum access which is nice for upgrades, lounges, etc).

My company approved hotels are:
Four Seasons - Chinzan-So
Imperial Hotel–Tokyo
Palace Hotel

Any input on these hotels and locations would be great. It seems like these are nice hotels -- should I dump Marriott on this trip? I think my office is located in Chiyoda-ku.

Thanks