More than 100 housekeepers, cooks, dishwashers and banquet servers at the CBRE Global Investors-owned Irvine Marriott hotel voted Wednesday to unionize with Unite Here Local 11.

The National Labor Relations Board (NLRB) election to bring workers into the union trumped Marriott management’s anti-union campaign, union officials said, which they claim included captive meetings, one-on-one lobbying from corporate executives and a personal appeal to vote “no” from David Marriott, heir to the Marriott fortune.

Araceli De La Rosa, a housekeeper at the hotel, said the resolve on the part of the 116 employees paid off.

“Management used every trick in the book to try to confuse, intimidate and divide us,” De La Rosa said in a statement. “But I’m proud to say that we stood strong and we won! We voted ‘yes’ and now we can fight for the respect and the compensation we deserve.”

The union filed a total of seven unfair labor practices with the NLRB, alleging instances of interrogation, threats and other alleged interference with workers’ rights under federal labor law. A regional office of the NLRB is investigating the charges, union officials said.

Officials with Marriott offered a brief statement regarding Wednesday’s union vote.

“We can confirm that certain associates employed at the Irvine Marriott voted to be represented by a labor union,” a company spokesman said.

Unite Here spokesman Andrew Cohen said the workers will be bargaining for higher wages and as well as improvements in retirement benefits, health care and working conditions, among other concerns.

“This is the third hotel to unionize in Irvine over the last seven years,” Cohen said. “There was the Hilton and Embassy Suites … and now the Marriott.”

The election comes at a critical time for the hotel. CBRE Global Investors recently put the Irvine Marriott up for sale.

The company bought the hotel three years ago with money from union pension fund investors including the California State Teachers Retirement System, Teacher Retirement System of Texas and other public employee pension funds. CBRE also owns the Pullman hotel in San Francisco, where employees allege management has retaliated against union supporters.