Thanks for replies.
I will need to be in the Wolf Trap area by 815am and will leave around 4pm, M-F. (This is not a compensated trip.)
I am using Marriott Reward points to pay for my stay and I don't have enough points to cover the stay from Sat. thru Thursday night.
So, in order to take advantage of the stay 4, get one free, I chose these hotels. I don't think Reston had decreased point stays available.