ExtremeFS has a good point. Fountains in the middle of the house can be difficult. I have a small fountain on the main floor, but it is of a size that can be easily moved. A permanent fountain is another matter.
While a lantern may look nice over the fountain, I don't believe this is good in terms of Feng Shui. This may be a problem you will need to research.
Please let us know what you learn, as this is a new FS problem and we could all use an answer to this.
lady moon