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Benny Blanco did it big in Las Vegas for his bachelor party ... staying in a swanky villa and hitting the club scene with his boys, including Lil Dicky .

Our sources tell us Benny jetted off to Sin City this past weekend with about 20 dudes ... and the bachelor stayed at the sky-level villa at Resorts World. Gallery Launch Gallery Resorts World

The villa is 65 floors above the Strip and it goes for an average of $25,000 per night. The place is 5,500 square feet and it comes with all the bells and whistles, including a freaking butler.

Check out the gallery ... the villa is fit for a king and the view is incredible. Play video content

Benny and his bros hit up XS night club at the Wynn on Saturday, where Marshmello was headlining ... and Lil Dicky was among thos

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