We used Aquascape Aqua-Blox to create a void space for the water to be housed. We then added out boulders, spheres, and bowl to the platform. Plumbing was tight just because of the location of the walkway on one side and the wall on the other. We still managed to fit a large basin in the space.
A lot of boulders were used through the yard to create depth and interest but also tie it all into the water feature.
In the initial designing the landscape, our client wanted a low-maintenance space. Something where trimming and pruning might only need to happen once a year. We used a lot of cotoneaster to control the slopes. We also used spicata liriope to eventually spread and fill in the beds to avoid the need to mulch. We used no grass in the front, sides, or rear of the yard. The only place we HAD to have a lawn was over the septic field, unfortunately there was no way around this layout.