Thank you for your replies! We are going over Easter (8 nights) and the cost will be the same as where we were originally booked (just under $1000, including pool heat) but the home is only a 3-bedroom. That's all we need, though the other home was a 4-bedroom. I obtained the address and did the google earth search. It is on an interior close a ways away from that big highway, so hopefully the road won't be too noisy or intrusive. I wasn't sure whether the whole subdivision was affected.
Just a little scary when you think you have a handle on where you are staying and then, due to circumstances beyond your control, it changes a week before you leave! The management company has been very up-front though, which we do appreciate.