In google maps after adding the location you can even show small information related to that within the Info window popup.
To display the Info Window popup go to any Google Maps > Add Location > Choose the action to Display the Info Window on Hover or Mouse click.
After selecting the action, you can now add the Title & Description in the space provided.
Follow similar steps to add the Info Window on other locations. To style this Info Window and its content go to the main Style tab.
For styling just the popup, go to Style tab > Info Window, where you can set the background color, width of the popup and others.
For styling the Title & Description each, go to Style tab > Address Title/ Address Description where you can add the text color and change it typography settings.