Would you happen to have a room with a king bed for tonight
Another traveler mentioned there is a king room option. I've stayed in the two double queens room, and then a single queen room. Why not call John and Tillie Lamey and ask them, at 406-222-3600? They're friendly and quite accessible. The only problem you might run into is availability. This time of year is the busiest for Yellowstone NP, if that's where you're headed.
Get an answer from Livingston Inn Motel staff and past guests.