Centrally, with good visibility in your home.
The best place to put the router is in a central location with good “line of sight” visibility to the main areas of your home.
Avoid placing the router next to large appliances, behind TVs, or in "service closets" such as power distribution or fuse panels. While the router is designed to provide extensive wireless range and coverage, these areas are sources of interference and may reduce your throughput or range.
For best performance, be sure to place the router upright and on a table top or flat surface.