I think the perfect female lover or partner should have the majority of these qualifications:
1.) Attractive--with celebrity quality looks or easy on the eyes.
2.) Compatibility--good chemistry is important.
3.) Enjoys Sex--moans or breathes heavily during the event, is tight or well lubricated down there, allows you to do her in several different positions, etc.
My Disclaimer: I realize that there is probably other qualifications as well and that no lady can be like that a 100% of the time.