Turkish Cotton

I have a white bathrobe luxurious Turkish cotton that has no care instructions other than tissue cryptic icons in the neck. Should I use bleach and if so, how? What is the recommended temperature to wash? I use regular detergent to wash it?

Turkish bath robes and towels are 100% cotton. Thus, you can choose a program for cotton on your machine. You can choose a high temperature setting if you like, but 30-60 degrees Celsius is the best.
I am Turkish and I use towels and bathrobes Turkish. I wash with regular detergent at 40 degrees cent., Do not use bleach, use a fabric softener. I always use towels that I bought 20 years ago.