overnight stay

finally decided to plan for another stay in St. Martin after 5 year absence. Now, need suggestions for a place to overnight in Miami on our way down and in Charlotte on our way back. Only going to need a place for 6 hours so don't want to spend a lot of vacation money on these places. Suggestions? Thanks,
TandP

As far as Miami we usually stay in the Miami International Airport Hotel. Very convenient location and reasonable priced.

thank you from Shelton, Wa.