I saw a train #406/470 ( listing in Thomas Cooke European Rail Guide that leaves Wien Meidling station at 22:08 via Breclav arriving Prague 06:15 next day. It supposedly has sleeping cars and I'd like to reserve a double. We have Eurail passes 1st class. But I cannot find out how to reserve just the sleeper room. The German rail Website only shows the express train leaving from Westbahnhof (Train 60406/476) at 22:08 and arriving at 03:33 in Prague--way too early for a good night's sleep.
Does anyone know how to reserve just the sleeper car reservations and not the ticket for the slower train? I know it may be too early to reserve in May, but I'd like to do it as early as I can.