I do, though it is currently put away for the winter to protect it from the cold. It is smaller than I wanted but when I was buying it I needed one that was toddler proof! I find it very relaxing and a great addition to the garden. As soon as we have a bigger garden and a slightly older child, I will be installing a larger one!
We don't have one, though I do think it can be peaceful if the sound of falling water doesn't irritate one. In any case, I wouldn't feel safe having one now seeing as we've got a toddler running around.
Yes, I actually have a large pond which I am in the process of having re-painted.
I had goldfish in it and they died, and the paint was peeling so had to get all the stones on the bottom out, take out the feature, clean the stones and the marble, and we are having problems getting all the peeling paint off.
The answer though is YES I have a very attractive water feature.