Sunshine. . . the main ingredient for great wine and good dispositions, both can be found at BEST PLUS WESTERN The Inn at Horse Heaven. Not only will our staff shine warmth into your day but so will the 300 days of sunshine naturally associated with Central Washington?s Yakima Valley. Located just off I-82 at exit 80, BEST WESTERN PLUS The Inn at Horse Heaven is close to downtown Prosser and offers easy access to more than 28 local wineries. We are only 172 miles from Spokane, 190 miles from Seattle, or 198 miles from Portland, which makes us a perfect location for your sun break getaway.