https://www.pcgamer.com/hitmans-best-level-is-free-for-a-limited-time/

Despite perpetual snow warnings, the Met Office reckons Spring has kicked off in the Northern Hemisphere. If you can't be convinced, you might fancy a complimentary trip to sunny Sapienza. Hitman's best level is going free for a limited time. 

Part of the game's Spring Pack, the free download extends from now through April 3 whereafter the Sapienza mission is yours to keep for good.