A water feature is always welcome in any garden. Keep it feeling natural by landscaping the edges to replicate what you'd find outside the garden confines. Instead of a necklace of matched stones around the entire pool that's a single depth, create a beach at one end and slope the sides down from the edge (also good for helping pets escape the water if they're not pond savvy; not so good for keeping other critters out). Very large
, flat stones of varying heights provide places to sit and keep the edges from appearing too regimented.
Tip: Build a bit of a raised bed or a mound to one side of the pond. Water flows to the lowest spot, so a small rise will help make the pool look like it was meant to be there.