Although the hotel’s historic outside facade is unchanged, the interior got a $125 million upgrade with an additional 86 rooms, including 32 suites, and an extra 27,000 square feet for meeting and event space.

The Watergate Hotel includes a new rooftop lounge, spa and gym complete with an indoor pool. Kingbird, its main restaurant, will open with the hotel.

The luxurious, eclectically styled rooms will start at $319 a night, and the “Hello, I Love You” and “Just Soothe It” suites will cost $450 and up, according to the Washington Business Journal.

Watergate’s owner, the New York-based Euro Capital Properties, has hyped up the hotel’s grand opening by hiring “Mad Men” costumer Janie Bryant to design old-fashioned employee uniforms and hosting a “topping off” ceremony with the District’s most fashionable. The Watergate Hotel will also host a grand opening party in June, the Washington Business Journal reported.

A Euro Capital official said the Watergate Hotel would reopen last summer. Original plans for construction proposed in 2012 projected the project would cost $70 million and would be complete in 2014. The company pushed back construction and upped the cost in 2013.