Asher would be staying in the country and in that same mansion for days for business purposes. The place was big enough for everyone, so he didn't need to bother his little brother and friends. With that being said, everyone settled in while Asher went to where he was supposed to be instead of arguing with Luke.
As mentioned, the place was big enough that all of them could have their own rooms. However, many of them agreed to stay inside the same room since it wouldn't be fun if they had their own room. Each room consisted of five individuals, girls and boys separated.
The only one who had a room all on his own was Maxen, and no one objected. They would be too scared to create the slightest noise if he was their roommate.
