Nice! :)
My longest train trip was from Sofia, Bulgaria to Athens, Greece with a sleeper train :) Very nice conditions and a pleasant journey...
Everything on time and you get a comfy bed (1 out of 3 vertically) in each cabin :)
12 hours to be exact & then back with the same train even having beers together with my brother and a friend. Kind of party night before going to bed :)
It was an interesting and peaceful journey...