I went to the Tohu as part of a corporate event which ended with a clowning art show (I discovered this art last year and since then I'm a fan).
The architecture of the building is very interesting, you can easily organize events there. In one of the spaces, there was also a small exhibition of abstract art, always useful while waiting for the show to begin.
The seats were comfortable and the room well sounded, I really enjoyed the experience ... The only real downside with this place, for me as a user of public transport, is its geolocation.