Den of Joy

A shadowy place to get great joy. Wonder what is happening deep in there?
Overview
Den of Joy is an entertainment building that stands out for its unusually large amount of entertainment recovery. Unlike many other leisure facilities, however, it is affected by a powerful Hardy debuff, which makes its operation much less straightforward than its raw output suggests.
Because of that drawback, Den of Joy is best treated as a high-reward option rather than a simple universal solution. Its entertainment value is very strong, but it should be used with care and placed in situations where its debuff will not undermine the rest of your management.
Official description
A shadowy place to get great joy. Wonder what is happening deep in there?