Most of the young FOs and some Captains that I know tend to share with other crew. If you end up working for an airline, the chances are there will be notices in the crew room for rooms to let or you may hear through word of mouth that Joe Bloggs has a spare room available. Much better this way than getting involved with letting agents.
If you end up instructing or dropping meat bombs, try and get a job near your mum and dad's place!