The room picture style can be set to allow or disallow text to wrap underneath the picture.
The picture style can also be set to either display as a fixed width or responsive width. A responsive width will show the picture at it's normal size if there is space and will shrink it if the screen size is not big enough for all the content. Responsive styles with a percentage attempt to keep the picture size to no more than this percentage of the available width for both the picture and room description.
The setting only effects the desktop view of the booking page.