For what seems to be a fairly organized system, they still have not figured out how to not have the compartments smell like stale urine. I am not even joking. The moment you step into a compartment even the air-conditioned ones, the stench of urine is unbelievably strong. This has been this way since 2000s. Such a shame for a system that could be so much better.
if i get seat closer to the middle of the coach, i could avoid smell.