We booked a unit with four beds as we were four adult friends, but our unit only had three beds.
Upon reaching out to Sonder after our stay, we were told that we got switched to a different unit due to availability issues. The fact that they wouldn't think to communicate that at all was pretty disappointing, especially considering how communicative they were through automated emails and text messages up to, during and even after our stay (which got kind of annoying). To their credit they acknowledged their error and issued a refund, but not the best service if that's something you need to reach out and fight for.
Worth noting that Sonder is a third party company separate from Airbnb, which was a bit surprising. They make you register and create an account which felt unnecessarily cumbersome (especially when my uploaded ID was flagged as "fake" in their system) and are strict on early check ins or late check outs (there are fees for each).
The unit itself is fine--cleanly, well equipped and in a good location. Besides from the obvious missing bed in our case it was largely as advertised though fairly cookie-cutter overall.