It's all a matter of personality. This wishing well in the middle of this courtyard as well as most garden decor ideas are a reflection of the personality that creates them.
Most anything the imagination can come up with can be a garden theme or focal point as long as a few landscaping principles such as proportion are followed. Consistency of design and harmony with the existing surrounding landscape is also necessary when placing specific decor such as this wishing well. Too many unrelated pieces of decor in this courtyard or any landscape can often start to look like clutter.