Hi, I'm planning my time in Turkey for the end of January 2014 and I'm trying to work out how to get from Istanbul to Konya and back by train preferably, or bus. I found what seemed like a perfect option from Haydarpasa, but have since found out that terminal is currently closed and not expected to reopen while I'm there. I would prefer a train so I can sleep, and am definitely interested in an overnight journey as I only have one week in the country and would like to maximise my sightseeing time. Any information would be much appreciated. Thank you.