Hi Gail, we have been to the Jasmine a few times and they are very nice and great location, almost on the beach. The only problem is the price of things there, you are better off eating and drinking in the resort. It was 5 Lira for efes 4 years ago, also tell your friend to avoid the onsite shop, also very expensive.
As t'others have stated Jasmine Beach is right on the beach, some way out from Gumbet centre. I've known a few folk who've stayed there and have really enjoyed the apartments, company of the staff and the beachside location. It does have the reputation of being a little pricey, but as long as you're fairly mobile, it's a pleasant 5 - 10 min stroll along the prom to the centre of the resort.