I got an email asking about places around the Hyatt are within walking distance (apart from the ATC and WTC). I can’t find the mail so I thought I would post my reply here.
The only places I can think of are the Outlet Shops, the bird park and the Wine Museum. There are also some events that are held at Intex just on the doorstep of the Hyatt. Close but not walking distance are the places around Osakako (Kaiyukan, Suntory Musuem with IMAX cinema and the big ferris wheel.
If anyone has other suggestions, please leave a comment on this post. Thanks!