There are a number of options for accomodations in the area. Most of which have websites, and are easy to find. Some of the lodges are a little more obscure, and may be tricky to locate on the internet.
However, we'd like to assist in your planning and present a few of the options in the Island Park area. This is broken down into two parts:
or
In Idaho Falls, which is 80 miles south of Island Park, there are many options as well. These are primarily limited to your typical hotels and motels, which have websites. If you do stay in Idaho Falls, we recommend staying closer to the river, which runs through the historic district, as opposed to the new development to the northeast. But, its not like Idaho Falls is a huge city: you can get across town quick enough if you stay up there.