Very nice rendering [:)]

Removing normals from the OBJ file doesn’t accelerate rendering since if they are missing, Sweet Home 3D will recompute them when it loads an OBJ file. It just makes a smaller OBJ file. If you’re not sure about what it might change and particularly on curved objects, forget my comment.

By the way, how did you create these towels that you placed on the edge of the bath (or where did you find them)?