I'm a bath tub girl - I need a soak to losen up my back each morning. That said, I will often clean the bath tub first - and will ALWAYS clean out a jetted tub before using it! I've been known to take bleach with me for such a purpose!
One of my worst stays was made so by no viable bath - it was in Ireland and the water was from peat bogs, and it was muddy brown - despite being told it was perfectly fine, I just couldn't sit in brown water - and the hotel had no pool or hot tub to soak in.