A compact method of isolating is to use a wall-mount platform. In this way, floor-borne vibrations are mostly eliminated. The use of an isolation platform, such as a sand box, or other will provide mass. The secondary platform can then be isolated from the wall-mount platform, by the use of sorbothane pads, or other products available. Experimenting with different means to achieve your goal can be enjoyable, and not necessarily expensive, if you are willing and capable of some DIY.
Best of luck,
Dan
Best of luck,
Dan