After the really simple establishment of the speaker system over the Bridige and the integration of Spotify in the Sonos app turns out that only a part of Spotify's features available in the Sonos app.
So only saved playlists can be accessed in Spotify, but not those created in Spotify, music collection (album, artist, artist). So there must be every album of an artist from Spotify be searched again on the Sonos search and be saved as a separate playlist. Furthermore, there is not prefabricated in Spotify Playlists under "Browse" or radio station.
Overall, therefore, a scaled-down version of Spotify in the Sonos app.
A demand for possible change / improvement with future Sonos application versions or the use of Spotify Connect for the boxes has been negated by the manufacturer. For specific information, it is recommended that before buying on the Sonos website forum to ask.
All other functions of the app, as well as the sound of the speaker convinced me. Due to lack of complete Kompatibliltät with Spotify but I will send the system back.