We really enjoyed staying at Sonder! It was a clean room and our location was right next to the metro/subway! We were a bit of a walk away from some things, but it was very easy to navigate and I think it was more peaceful away from all the crowds.
When we got there we were well before check in time, and wanted to walk around, so they let us leave our baggage at the hotel.
The only downside was the rooftop bar, which our front desk person told us had no affiliation with the hotel- which was good because if it had been it would have been a red flag- terrible service and inattentive waitstaff.
All in all, I believe we would stay here again and definitely with Sonder in the future!