A couple of days into our stay, our bed frame collapsed. On-site staff told me to contact Sonder support, so I did. They were not able to get somebody to come look at the bed the same night, so we had to sleep on a broken bed. Sonder sent a maintenance man to look at the bed the next day. He stabilized the bed, but the bed was still broken and could have collapsed again at any time. Sonder support told me they would send staff to work on the bed sometime within a large window (Tuesday through Saturday, 10am to 6pm) but never replaced the bed or properly repaired it.
Our room was well-constructed, but there were several other signs of a lack of maintenance.
Sonder is probably fine if everything in your room works, but their business model seems to involve keeping a skeleton staff on-site and providing minimal service or maintenance.