Sergey Alakov who must be included in every single Google tests bucket found another Google test where they are showing a floating button in the local listings that let you toggle between a map view or list view.
Here is a GIF where you can see the blue circle button at the bottom right switched the interface from map view to list view:
This allows searchers to find local results by proximity to a point on the map visually or by data.
I believe this map toggle button is something used in Google Maps as well.
Forum discussion at Twitter.
Update: The toggle in 2025:
Map / Listing toggle on Mobile/USA, linking back to Google Hotels pic.twitter.com/pg9ixR3ni4
— Lluc B. Penycate Ⓐ (@Lluc_SEO) October 23, 2025
