The hotel I have used on my recent visits to Tokyo is one of a group of hotels in one location. Between each of the buildings is a garden. It is a peaceful place to hang out (even when it was as hot and humid as it was when I was first there) and it has temples, bells, a lake and lots of places to rest and contemplate. In the evening, it is subtly illuminated providing a very different feel compared to how it is during the day.
On some occasions, music was piped in. One evening there was a guy playing some sort of flute as he wandered around the garden. I assume he was hired to do so rather than just showing up and playing but you never know. He was fighting the noise of the cicadas when it was hot!