Exist any plugin to add a calendar in the wordpress post?

Hi, Know any body if exist any plugin to add a calendar in the wordpress post?

I need for a rentals blog and I want to let me put the timetable with a red color the days in which the floor is occupied and with the green color the days in which the floor is free to rent.

This means that I need a plugin who let me to add a little custom timetable for the wordpress entries.

Thank you!