Yep, I've been.
We did most of our holiday in Djerba and booked a jeep safari to the Sahara where we stayed overnight in an oasis in a 5 start tent.
Went through Tatooine on the way there (which apart from the name is frankly a **** hole), we saw the place they used for Annikin's house in Episode 1 and of coure, the Lars homestead interiors on the way back to Djerba.
It was pretty cool travelling though the desert with the star wars soundtrack playing on my headphone.
There are a bunch of guys on rebelscum who have done this in much more detail and seen many more locations than me, so you may get some better advice on there!
The only other thing is will it be safe there given all the political upheaval there has been lately. It's likely to be safer in the main resorts like Djerba etc.
Best of luck!
Jason