In my limited experience i would go
by day for the scenery.2nd class is ok for looking out the windows in my experience.You can get up and walk around.Night alright too but i couldnt sleep and its mildly costraphobic!
Its a great experience and
beats getting on the south east trains that run into london here!!!!
Could you please explain to me the emboldened parts?
Source :
http://www.indiamike.com/india/indian-railways-f10/mumbai-to-goa-day-or-night-train-t17468/