Playlists are stored on the Sonos hardware.  The app is just a controller. 

Thank you jgatie ! Now I understand the architecture better.

I will investigate if I could create and acess Deezer playlists (Deezer is my streaming service).

If you are using the same WiFi credentials (SSID and Password) at both locations you can take a speaker from your cottage and let it join your home system. The Playlist will then available via any speaker. 

However, if you update the Playlist while at home you’ll have to move the same speaker back to your cottage to update the Playlist for those speakers. The process to keep both locations updated with the same Playlist will require you to move speakers between locations going forward.

AjTrek1,

Thank you, but its a bit too much trouble, as I create playlists in both locations and would need to move a unit back and forth. 

Both homes have a different internet provider. 

I understand as I thought the process might be a bit too time consuming.

FYI, it doesn’t matter if you have different ISP’s. You can decide what your SSID and Password are. If I were fortunate enough to have two dwellings I would set both up with the same SSID and Password. 

If the Deezer account is the same in both locations, your Deezer playlist will transfer with the account. As has been suggested, your Sonos playlists will not, since they’re stored locally on the Sonos device. 

Airgetlam,

I will start using my Deezer playlist. I will also access it in the car or on a walk with my iPhone.

Thank you,