We are building a new 6' x 15' bathroom with a 6' x 7' area which will contain a shower and a stand-alone tub. The shower pan will be 6' x 3.5' and we are planning to build a small raised platform (6' x 3.5' x 4") for the bathtub to sit on. We are currently planning to tile the top of the platform. We are not planning to have any barrier between our shower and tub. Our contractor thinks that we need to have the platform sloped toward the shower pan so that water that may splash onto the raised platform drains off.
I don't really like the idea of not having a level surface for the tub, and I am wondering if (1) the slope is necessary? (2) if there are other ways to deal with the water that may get on the platform?
This is the bathtub being used: https://www.homedepot.com/p/Vanity-Art-Versailles-59-in-Acrylic-Flatbottom-Freestanding-Bathtub-in-White-VA6610/305086229