If you want to go the slat approach and have a mattress with springs, i'd.
42+ Can You Use A Mattress Without A Box Spring
Pics. There are several box spring alternatives that will provide a better foundation for your mattress to rest on. If you want the more traditional look.use a boxspring.
Platform Bed Vs Box Spring Vs Foundation Which Do You Need Savvy Rest from savvyrest.com
The information below should answer the question 'do. Your bed frame is set at a height that assumes a foundation. They were created to fit on bed slats and support a mattress without adding much to the height of the bed.
Traditional box springs would often come with your spring mattress, sold as a coordinated and matching set.
Unsure whether or not your mattress needs a boxspring or foundation? Originally box springs were basically mattresses. Most new mattresses don't need a box spring for the sake of comfort, but many modern mattress warranties still require a box spring! Just make sure to pick a mattress with a warranty that allows use without a box spring.