This was my first time staying with Sonder, and it was excellent! Super clean and cozy. It feels more like staying in your own upscale apartment in the city (i.e. more intimate than a traditional hotel), but turbocharged with boutique hotel perks. The lounge is very peaceful and has complimentary water/tea/coffee/extra amenities. Our room was on the small side but very clean and well-designed: modern but warm aesthetic and furniture, comfy bed, Roku TV, personal coffee maker, high-quality soap and shampoo.
Also, the location is unbeatable. I loved the area and street it was on, plus it is very central for getting to other spots in DC. Lots of cute streets to amble right out the front door, and many cafes/restaurants/bars/etc. to explore.
The Sonder app (which has a 24/7 concierge feature) is so convenient and comprehensive. It addressed every detail needed to ensure a smooth stay (luggage storage, modify check-in/out, etc). Anytime I reached out to a concierge, they were very fast to respond and always friendly. Highly recommend this place!