Really I can’t imaging too many transfer students wanting to live with 18 year old freshmen. Yes, it is only a 2-3 year gap in ages, but there is a big difference in maturity between 18 and 20. I know none of my kids would have enjoyed rooming with a freshman when they were juniors. If you are living in an on-campus apartment with other transfers, you will still get a lot of interaction with others and have opportunities to meet people.