I would advise to away from Sonder at all costs. this was my worst experience during all my 6 years using Airbnb.
1- When I got to the front desk, I was informed my booking was cancelled and they were full so there was nothing they could do. I had not received any message from Airbnb or sonder informing me of that. I had to insist for over an hour, so I could finally be relocated to a different room. it was extremely stressful.
2- because they messed up my booking I had to split my stay in two different rooms, which in itself was already quite annoying. but I wish it ended there. when I got to the first room, the shower sink was clogged so I couldn't shower. I called the front desk, and they gave me instructions on how to *gasp* fix it myself. that's not the right service for a $600/night room. regardless, I tried to fix it and couldn't. so I stayed without shower.
3- when relocating to the second room, they gave me the wrong checkin instructions. so I had to wait for someone to come up and open my door to me, and another couple hours just to get the right access code.
overall it was a terrible terrible experience. the staff is disorganized, they don't care about their guests. an expensive stay for the worst experience of my life.