This is the neutrally-styled widget that you are familiar with:
A bolder, more colourful style:
Use my own CSS
You can still use your own CSS if you have the skills to create your own widget stylesheet.
Here, your guest searches for available rooms by picking a date, and will then see a list of available rooms. Here's the Date Selector in the Modern style:
As with the Date Selector style, your guest picks a date, and then sees available rooms. But in this version, the guest can see if a particular date is full or closed. Here's the Simple Calendar in the Modern style:
This shows the guest a grid, similar to the one you see as owner, showing availability and price for each room on each day. Here it is in the modern style:
More styles will follow over the next few months. Enjoy.