My approach to enemas is one of pleasure. I love the sensations of water flowing in and out. But a key factor is the temperature of the water. Warm water is my preferred temperature- I barely notice it going in (temperature wise) so I would imagine it is close to my body temperature. I have experimented with hotter water and love being able to feel the warmth inside me, but I have noticed that when I expel the hot water can be a bit irritating / painful to my anus so I have to back off on the temperature.
So what is your preferred temperature and why do you like it?