Master Bathroom- Shower - bench or no bench

[Pandu Chimata]

We are working on a flip that is expected to have more than $700K value and we are discussing the value of having bench in the shower. This shower is going to be in the master bathroom. There is no tub in this master bathroom. 

It seems that installing a tub is couple of days work including putting a frame and filling-in with the concrete in side the frame and tiling on the outside.

Do you see a value of the bath tub or does it change the appeal of the bathroom to the buyers ?