Spanish Immersion for Nurses (ISLS AdventuraSed)?

I am looking to do a Spanish Language Immersion for nurses to get some international nursing experience and improve my Spanish skills. I have found ISLS http://instituteforspanishlanguagest...ls/nursing.php and AdventuraSed http://www.aventurased.com/Spanish-I...s-Nursing.html online. Does anyone have experience with either of these companies, or any other immersion companies?

Thanks!