There is a really nice place to stay on Mormon row its the Moulton Cabins http://moultonranchcabins.com/.
We love it there but its hard to get in, last year we got on the list and someone canceled. it about 150 yards or so from the famous south barn and about a mile to the north barn. Last year we stayed one night at the south and north and west and east entrance towns then finished up at the Moulton cabins.
thinking about a trailer this year, the inlaws offered to let us use theirs and Gros Ventre looked very good, except it shuts down early Oct.
the mountains are calling I must go.