I also recommend the twin if you book the "Guest Room".
All twins of these rooms are a so-called corner room with very large
windows, overlooking the Yoyogi Park and Meiji Jingu Shrine.
I like this room better than the Park Room.

All Park Hyatt Tokyo twins have two double beds, and kings have one
extra-wide king bed.

-Edited for spelling-

[This message has been edited by water7 (edited 02-21-2003).]