We stayed with my brother's family [ 3 adults + 5 kids] for ~5 days as we were visiting Zion and Bryce Canyon National park.
the place as 4 bedroom [3 of them ave 1 bed each + 4th one as 4 bunk beds] + 1 living couch with a convertible bed. the place is large enough to fit 3 families [6 adults + 6 kids] with 3.5 bath.
house is very airy with typical mountain retreat cabin feel with all the modern convenience such as internet, cable tv, and A/C.
kitchen was well stocked with basic plates, cups, and utincils + REF/Dish washer. the house also came with washer/dryer for your dirty clothes of hours of hiking.
as far as the location is concerned, if you are looking to camp at both Zion[25min drive to the visitor center] and Bryce [80min drive] , it is as good location.
if you plan to stay for just Zion, there might be a better location closer to the west side of the park entrance.
the place is also next to the resort, which is ~1mile drive with a good swimming pool [$5/person/day tor $20 for a week] + access to pool table, ping -pong table. the resort also had $5/person zip line for evening, which is great for kids.
overall, great experience and I would stay at the place again and recommend it for others.