Thats a wacky way of sorting that, Locations are very much for actual customer locations not for Storing information on Wireless networks.
Realistically, if you want it accessible assets interfaces as something like WP0 you would create it as network in the network section.
In General, I've just been going into the Service section and doing a write up there, and tag the SSID credentials in credentials with a tag that says "Wireless Credentials.
It may not be an awful idea to add a "wireless" network modal with Wireless network specific things like broadcast radio types, and channels and give it its own icon