Groupon Getaways will let you know the name of your Mystery Hotel via email 48 hours after the sale ends.

3.5-Star Mystery Hotel

This upscale mystery hotel is located on a quiet street in family-friendly Woodley Park, a D.C. neighborhood marked by tree-lined streets and the expansive Rock Creek Park. Watch giant panda cub Bao Bao climb trees and play with her mom at the Smithsonian National Zoological Park, just a short walk away. Also nearby is 18th Street in Adams Morgan, a cultural hub where you'll find a melting pot of ethnic cuisines and nightclubs.

• Dine in at the hotel's three restaurants, or get your caffeine fix at the coffee shop.
• Kick back in spacious rooms, which feature foam pillows and a blend of contemporary and classic decor.
• Stay fit at the onsite fitness center, which is equipped with cardio equipment and free weights. The hotel grants 24-hour access to guests 18 and older.
• Learn something new at the Lincoln Memorial, the National Gallery of Art, and the Smithsonian Museums that line the National Mall, just a few miles away.

Washington D.C.'s Woodley Park: Historic, Family-Friendly Neighborhood with Smithsonian Attraction

Residential district Woodley Park hasn't changed much since its adoption into the nation's capitol—it was once a suburb connected to the city by streetcar. Its quiet, tree-lined streets date back nearly 100 years, earning it a designation on the National Register of Historic Places. Today, coffee shops and sidewalk cafes are tucked into late 19th- and 20th-century revival architecture. Visit the free Smithsonian National Zoological Park, home elephants, baby giant panda Bao Bao, and roughly 400 other species of animals. The neighborhood is also home to the Washington National Cathedral and Rock Creek Park, which includes a nature center and planetarium.

Just across the river is the culturally diverse Adams Morgan neighborhood, which has long been considered a gateway community for immigrants. This is apparent in the vast array of quirky shops and ethnic restaurants on bustling 18th Street. Among the restaurants you'll find Guatemalan, Dutch, Ghanian, Vietnamese, and Eritrean cuisines. At night, this stretch of road becomes even more vibrant as dozens of equally diverse bars, music venues, and nightclubs open their doors.

A bit further south is Dupont Circle, located about 2 miles north of downtown, where embassies housed in historic mansions neighbor hole-in-the-wall bars and boutiques. During the day, crowds gather in Dupont Circle's park to watch chess players hustle on permanent stone-table boards. Here, you can catch a glimpse of the neighborhood’s elaborate centerpiece—the two-tiered, white-marble Dupont Circle Fountain. At night, check out the bars along Connecticut Avenue, which range from Latin lounges to beer pubs and high-end clubs.

Love to travel? Follow us on Facebook and Twitter for travel tips, inspiration, and photos from around the world.