This got me to comment - while off topic, wanted to note that this sushi spot (Sushi Azabu Higashiyama) was really great. We managed to sneak into a same-day slot in early April.

We were here for 1 night (2 other nights at HP) at the tail end of cherry blossoms in April (Kiyomizu & Maruyama's were still excellent the first day, but were noticeably reduced after a overnight rain). Definitely enjoyed the stay, breakfast buffet was excellent - while variety was less than some of the larger spreads that other Hyatts offered & minimal hot options were offered (hot dishes off the menu - otherwise just some shumai which were actually really good), this seemed to result in a high consistent quality.

Also the small spa doesn't appear to be heavily used. Contains a wet & dry sauna, and hot & cold bath. Small meaning probably not too comfortable with more than 4 people inside.