This is a hotel, but with no reception, no concierge, no housekeeping, no room service. The rooms at this location (Quincy Washington) are clean and spacious. Kitchenette is sufficient for simple meals and breakfast. Location is good for attractions off the mall. There are a couple of metro stops nearby.
The Sonder Check-in Process is NOT Friendly at all. It took me a hour with help of their support desk (only on the phone) which if you are overseas would be very expensive