This name looks like the Arabic name Anisa with an extra 's' added in. Anisa means 'friendly' in Arabic. I have a friend named Anisa. I think it's really pretty and it suits her.
Hideous. The only -issa name I like is Marissa, and Melissa is so common it's tolerable, but the other ones sound so girly and immature, as does this. At least Carissa, for instance, sounds prettier than this ugly name.