Google is experimenting to add specific hotel prices in Google maps for the guidance of the people. The new feature has been added for a small portion of users. Google’s new added feature is very simple and straightforward. Whenever you want to search hotel prices in a specific area you will be able to check the prices of hotels that show up in search results, which will be based on the date and the number of nights you want to stay. The available data is based on advertised prices from sponsored.

Google has very clearly announced that it is not going to change its criteria  for hotels ranking system.  This is just only  an experiment to test a new form of advertising that might be useful to the user. As you know Google first  evaluate the usefulness and effectiveness of  new feature based on both data and feedback and then make it available to more users and offer prices from more partners over time.