Overall, I had a very nice stay at this apartment, but there are a few things that should be noted so people can decide if it works for them. First, the good: the apartment and the building it is in were beautiful, and the location was extremely convenient. I was very pleased with the quality of the room, furniture and amenities. Super nice place at a decent price. Also, the customer service team at Sonder is pretty good.
There were two downsides, which others may or may not care about. The biggest issue is that, once you book on Airbnb, you get an email and have to do a whole other process through Sonder, which includes uploading a copy of your passport. They say this is legally required (perhaps because they're registered as a hotel). If so, that's fine, but I don't love uploading that to a site I don't know. Also, their app for doing that requires that you create a Sonder account (and therefore give them your data), and, honestly, the App is glitchy. I forgot to go through that whole process until the day before my check in and then flew to Spain not knowing if I had a confirmed reservation.
All in all, it's not hard if you don't mind creating an account. But it's definitely not as easy as regular bookings on Airbnb. Was it worth it in the end? Yes. Bust just something to be mindful of.
The only other downside is that the street is very busy and can get loud. The apartment has double windows so it does a decent job but if you're a light sleeper it could be an issue. This is a trade off for anywhere with an excellent location, I imagine.
Overall I'd stay again. Just wish I'd known about the check in business before hand.