Train Travel In Russia
If traveling by rail in Russia, only get tickets for 2-person lux compartments,
which is the best of the four classes offered.  It may cost more, but they are
vastly more comfortable and private.  And much safer, too...
 I can't seem to find any good photos showing the interior of the trains except
for the following two from a lux compartment I was on from Nizhni Norgorad to Saratov.