The issue of noise is wifi + AC power. You want to avoid putting it in the rack with your audio gear, for sure. The AC power issue can be mitigated with an iFi low noise wall adapter or putting it on it's own low noise power conditioner like a Furman PST-8.
If you are running Ethernet, consider an Ethernet isolator like this near your streamer. Especially good for long runs as it will help protect from common mode surges.

