The fire broke out at 3 AM on the sixth floor of the hotel killing Rahul Doshi, Saurabh Chouhan and Suhag Nath, Alwar SP Vikas Kumar told PTI over phone.
While two of them died of suffocation, one was burnt alive, he said, adding that there were 22 persons on the seventh floor of the hotel when the fire broke out.
Five Japanese tourists staying on the other floors of Cambay Saphire hotel along with other customers were rescued, the SP said.
The cause of the fire is yet to be ascertained, he said.