What do they mean by "open minded?"

[Sightseek]

Someone sent me this job posting on Craigslist....

Are you a Country Gal Seeking a Fresh Start? Love Horses? Free R&B!

We have a Live in oppertunity for the right girl, Comes with everything you need with no living expenses in trade for a helping hand and friendship, but you must fit everything below.
Love the country life.
No children living with you (single room only)
Non smoker.
At least 21.
Fit and able to do your part.
Not scare children & animals with your looks.
Be nearly anal about neatness & cleanliness.
Have an interest in the restaurant/bar business(in a coyote ugly way).
Be open minded and okay with living closely with a attractive 50 yr old couple.
Love horses & riding.
Be good with people & get along with women as well as men.
Be able to be a good friend, partner and always take care of business and what needs done before playing. (okay to whistle while you work and blend fun with work)
Be fun and looking for more of a longterm thing and not just a free ride or party. This comes with a paying onsite job also.
This is a walk into new life with a nice vehicle, great furnished room, all meals & drinks, your own horse, phone, internet with furnished computer, great new friends and a very fun laid back life in a very,very cool place and a $200 -$400 a week pay depending on business and how much you want to work. You will have to click with us and understand that you are part of our lives & business and you must act and help accordingly. In return you basicly have it made.
If interested send good pic and info about yourself and present situation. If interested we will send our pics, more info and website for our location.