Being the keeper of the inn, most people would think that Sungjae would prefer his own room. Which in a sense he did, but he wanted to get to experience life with the visitors just the same way as they did. So he found himself in room 101 the first room for the boys staying in the hotel.
Having packed a specific suitcase for things the room he walked in the room, looking at the three beds before deciding on the one closest to the door. Setting his suitcase on the bed he decided it was time to get settled in.