I take Tuffy & Bella into the tub with me. During this past summer I bought kiddie pools for outside play & I think that was the turning point of bathtub not being fun. Maybe once it gets warm you can try that too. Tuffy thinks a bathtub is his own personal swimming pool now in fact. After we've gotten all clean I fill the tub up to about midway on his belly then hold him up a little so he can "swim". He's gotten so much fun out of this I think he looks forward to bathtime
Is the water too warm? It took me awhile to find the right temp at first for Tuffy; he'd shake & shiver if the water was too warm (maybe because it made the air feel just that much cooler). Another idea is warming the towels you use. I also use a diffuser on my blow dryer set on low to dry them after they've done their rubbing around on extra towels on the bathroom floor.
Good luck & hopefully some of the tips you get will help!