Spa World Osaka: overnight rest area?

Does Spa World have a rest area where I can sleep until morning?
I�fd like to use the onsen and stay somewhere affordable with easy access to Expo 2025 early in the morning.

(I remember someone posted about this many years ago, but it�fs probably outdated now.)

Thank you.

Have not been myself, but based on the info about a late night fee for the onsen, I assume there must be some rest space as well.
https://www.spaworld.co.jp/english/info/faq/
The above Web page states that there is an extra fee of 1300 JPY if you extend your entry over midnight. In that case you would be allowed to stay until 9 am the following morning.

Thank you :)