Want to see the Royal Palace? You're right next door.
In Tokyo's downtown core, neighboring one of the city's main business and financial centers, is a surprising burst of peaceful greenery. It's a historic 17-acre traditional Japanese garden, and it makes for a very nice spot to sit for a moment's reflection. And, right in the middle of the garden, rises Four Seasons Hotel Tokya at Chinzan-so.
Elbow room is at a premium in the city, so you'll love the generous rooms. The smallest is a very comfortable 484 sq. ft., with the Imperial Suite topping out at, oh, about 3,000 sq. ft. or so. Odds are you won't be booking that three bedroom palace, but don't fret, all rooms have marble bathrooms, fantastic city views, and all the modern amenities you could ask for.
Many of the treatments one finds in a spa are a big part of Japanese heritage, and the spa at Four Seasons Hotel Tokyo at Chinzan-so seemingly offers them all. In town with a partner? Book an afternoon in a double room for some pampering for two.