Argonne guesthouse (building 460)
The ANL guesthouse is the best option for lodging and offers free parking. Based on the feedback on in-person attendance, we made a room block for 20 single rooms (standard king) which cost $114+6% occupancy tax per night. We ask that you make your reservation yourself before April 5th when they release the block. To book one of the blocked rooms, please use their booking form and the group name "Muon g-2". Please note the guesthouse also has double occupancy rooms for $124+tax which you could reserve as well pending availability. All rooms include continental breakfast.
Offsite hotels
There are many other hotels for various budgets nearby. Argonne has a few preferred off-site ones listed on the area accommodations webpage. Please let them know you are visiting ANL in case they offer special rates. Some of them might have a shuttle service to the main gate of ANL but you would have to inquire if you needed that.