opefully one day we’ll have some sort of “stream to Sonos” option in Spotify.
You would hope they’d one day make it AirPlay compatible, but then the Sonos would just become a dumb speaker and I can see why they might not want to do this. Bit of a pain though for those who would like to use it as one occasionally. You can of course just get an AirPlay device thing and plug it into the aux port on the Sonos.
Oh and in reply to the OP, works well enough, quite nicely integrated into the Sonos app. Less feature rich than the full blown Spotify app and I don’t think it’ll do your Spotify playlists or Spotify radio channels.