The conference does not have a dedicated headquarters hotel this year, but there are several hotels for every budget in easy walking distance from the conference site. The Little Rock Convention and Visitors Bureau (LRCVB) has a list of River Market hotels (note that some of those listed are not in walkable distance from the conference site, make sure you know how to get to the site). We reommend the hotels along or close to Markham St and President Clinton Ave, as it is a nice, very walable area. Many hotels in that area also feature shuttle service to the library, as it is one of the main attractions of Little Rock, you may want to inquire about that option before booking.
You can find them on the usual hotel information sites like, Kayak, Priceline or others.