This is a treasury proposal whose proposer address (FZXTQvVwJofMARvgpmJspmXa9fRBVTEzPY8qJSnWKA4dAyn) is shown in on-chain info below.
More information is available here:
https://docs.google.com/document/d/1vo7wFSDVyWc0DDCPw8mYXNB1DzoaMrndO_uMXavS15M/edit?usp=sharing
It was organized on the first day of Polkadot Decoded 2022 in Berlin. It was a Happy Hour with drinks, food, and music. The venue we had chosen combines some of the characteristic features of Berlin - green trees, music, and graffiti, in an open and welcoming space.
The event was hosted by Acala, Astar, HydraDX, Interlay, and Manta Network.
Event link: https://www.eventbrite.com/e/polkadot-decoded-happy-hour-2022-tickets-373536165727