Perhaps see the instructions in this Sonos Support Article:
https://support.sonos.com/s/article/1061
Note that some WiFi networks at Holiday rentals can occasionally be problematic as they sometimes have a login page process to setup a device (such as a mobile/tablet) on the wireless network and those pages can/do cause problems for Sonos products and prevent them joining the network, so in that case you might have to consider using your own router/access point connected to the network as a ‘middle-man’ device, or perhaps use a mobile WiFi hotspot instead - so I would keep that in mind.
The fallback, if all else fails, is to use the Roams Bluetooth connection to your mobile.
HTH