Venus shows what a man is attracted to in a woman. Being with a woman who is strong in his Venus element, or who makes close sextiles to his Venus makes the relationship much easier, and increases sexual desire and compatibility. For a woman, her Venus is part of her feminine nature, so it is definitely best when her partner also relates well with this element. When people have positive Venus synastry, they naturally like and love each other. That, of course, is what makes positive Venus synastry so great.
Venus Inconjunct Mars
Your desires are not in syncopation with your partners romantic rhythms or sexuality. Acts which you find sexually pleasurable are unfamiliar to or outside the experience of your partner. You are both very attracted to each other but have different approaches to your sexual expression. When the Venus person is inconjunct the Mars person, you love life tends to be mutually frustrating and unromantic. they aren't turned on by your timing or technique. There is a learning curve to discover new mutual grounds for sexuality and sensation.