Park Hyatt Tokyo in business district

I would like to know something more about the Park Hyatt Tokyo in business district. I will be there next week on a convention that does not interest me at all. Still, I will have to attend the seminars, so I do not know if I will be able to see much of the town. Perhaps I will go to business dinners, which is even more boring. Anyway, can I expect any fun in the hotel?

I guess that half of the people attending the convention feel the way you do, but are afraid to admit. Here are some things available to you in the hotel: business service working 24 hours (I guess this does not interest you much), library with over 2000 books (travel, culture, art), art collection, beauty salon, shiatsu massage (interesting), wedding chapel (if you go crazy) etc. Even though you could spend time in hotel with these activities, I strongly suggest that you still one hour from your obligations and at least walk through the city.