Billionaire Larry Ellison teamed up with Robert De Niro and chef Nobu Matsuhisa to open a hotel where rooms start at $1,100 a night

Barbara KraftTen years after he bought the beachfront Casa Malibu Inn for $20 million, Oracle founder Larry Ellison is just about ready to unveil the first in a new group of ultra-high-end luxury retreats.

He's doing it with a trio of high-profile partners: Robert De Niro, chef Nobu Matsuhisa, and film producer Meir Teper.

Dubbed Nobu Ryokan Malibu, a new 16-room hotel now stands on the property Ellison bought a decade ago.

It's the first in what is being called the Nobu Ryokan Collection, a new group of luxury retreats in exotic destinations around the world, created by Ellison and the creative minds behind the Nobu restaurants.

The experience, which is modeled after a traditional Japanese inn, won't come cheap - according to Curbed, rooms will start around $1,100 a night, though that rate could go up to $2,000 during "preferred" times.

Let's take a look inside the hotel, which opens April 28.