What happens to my credit if I don't pay my timeshare?

I have a timeshare through Eldorado Resorts. The actual timeshare is at Grandview Resort in Las Vegas. The loan is through Eldorado Resorts. Apparently it's close to impossible to sell a timeshare and I'm not going to pay a company $500 to maybe sell the timeshare. My wife and I are ready to buy a house but we need the extra $300 a month for mortgage that I pay to the timeshare. Our credit is good/great and my timeshare loan does not show on any of my credit reports. Since the timeshare loan doesn't show on our credit reports, if we don't pay it and just let it go into foreclosure, will our credit get nailed? Every other loan we have (car, student, credit cards) show on our credit report. What will happen if we just stop paying the loan?