I went from bangkok to koh Tao with this company and if I had the money to do it any other way I would have.
Decided to do the overnight trip which I definitely would not recommend. It's near impossible to sleep and they turn off all the lights on the bus so you can't even read. At the half way mark I asked if they could turn on the reading lights above our heads and I was literally just told "no"...apparently no further explanation is needed.
We arrived at the dock at 5am and had to wait for nearly 2 and a half hours for the boat to leave which was pretty miserable.
Staff were rude and unhelpful when checking in.
To be honest the thought of the return journey is casting a bit of a cloud over the rest of our stay. If I could do it over I would definitely shop around for a better way to travel