Sonder Callisto is a 3-star apart-hotel in Washington, D.C., about 2,6 mi from the city center.

Address: 816 Potomac Avenue Southeast. Price starts from $109. Highlights include free WiFi, air conditioning, a terrace, a kitchen, non-smoking rooms, kitchenware, an elevator with upper-floor access, free toiletries, and a balcony.

Reviews: 303.

Sonder Callisto offers a versatile lineup of accommodations in Washington, D.C., designed for travelers who value space and self-sufficiency. Options range from Deluxe Studios and Studio Apartments to One-Bedroom, Superior, and Two-Bedroom layouts, spanning 355 to 775 square feet. All units are non-smoking and come equipped with a kitchen and kitchenware, plus free WiFi and air conditioning. Some homes feature a terrace or balcony, and an elevator provides easy access to upper floors at 816 Potomac Avenue Southeast.

Inside, layouts are crafted for different group sizes: the Deluxe Studio sleeps two with a 1 Double bed; the Studio Apartment offers 495 square feet and a King bed for two; the One-Bedroom Apartment also fits two with a Queen bed. For larger groups, the Superior Studio accommodates up to four with a sofa bed and a Queen, the Superior Suite offers a Queen bed plus a sofa bed, and the larger Superior Apartment and Apartment with Terrace or Balcony host up to six adults with a sofa bed and two Queen beds. The Two-Bedroom Apartment provides a mix of sleeping options: a Double bed, a Queen bed, and a sofa bed, all within 689 square feet. All units are non-smoking.

Payment is card-only, with Visa, American Express, and Mastercard accepted; cash is not accepted. Prices start from $109. The combination of in-unit kitchens, outdoor terraces or balconies, and a range of layouts—up to six guests in some configurations—makes it a traveler-friendly base for exploring the capital, with convenient access to upper floors via the building’s elevator.