The D.C. area will soon get its third AC Hotel by Marriott, a popular hotel brand targeted at millennials.

StonebridgeCarras signed AC Hotel as the flag for its $300M Downtown Bethesda development at the corner of Wisconsin and Montgomery avenues.

The 219-room hotel will be part of the 250-foot-tall mixed-use project the developer is planning on the site of the Second District Police Station, across from the Bethesda Metro station. The development, expected to break ground in 2019 and deliver in 2021, is also slated to include a 390K SF trophy office building.

The hotel will include several shared spaces to foster social interaction, including a ground-floor lounge that will open out to a public plaza underneath a 45-foot overhang.

For the hotel component of the project, StonebridgeCarras brought on OTO Development as a partner. The two previously teamed up on the Hilton Garden Inn at NoMa's Constitution Square development.

"Integrating AC Hotel Bethesda's amenities with the wider development enhances what the office spaces can offer their tenants, and that, in turn augments opportunities for the hotel," OTO Development CEO Corry Oakes said in a release. "We anticipate incredible synergies between every component of 7373 Wisconsin."

Marriott introduced its AC Hotel brand to the D.C. area at National Harbor and has another one in the works in Dupont Circle. The 219-room hotel at 1112 18th St. NW, also an OTO Development project, is expected to open in 2019.

The newest iteration will sit less than half a mile from the site Marriott has chosen for its new 825K SF corporate HQ. The Bernstein Cos. and Boston Properties-developed project will include its own 230-room Marriott hotel.