I think you're really going to like being in water during labor. I don't know if you will like getting out of the water, though, for the birth of the baby. When my daughter was born, the last thing I wanted to do was to get out of the water. It just felt too good. I gave birth to her in a $30 inflatable kiddie swimming pool and I loved it. I think the bathtub would be too small, hard, and restrictive of my movement. The inflatable pool even had an airfilled bottom, so my knees didn't get sore. There was enough room for my husband to be in there too, rubbing my back.