That space is gorgeous — the dark walls and low lighting would pair beautifully with anything that has gold leaf or warm metallics.

For the vibe I'd look at: Gustav Klimt (the gold period especially), Remedios Varo (surrealist dreamscapes), or even some James Turrell light installations if you want something unexpected.

Though honestly? A single dramatic Bitcoin-themed piece might be perfect given the company. There are some incredible generative artists in this community making stuff specifically for spaces like this.