Innuos with wi-fi

Probably don’t want to setup any streamer directly on a public wifi connection.

I’d look into the wireless client connect, dhcp on lan side over ethernet cable to in apartment devices.

https://openwrt.org/docs/guide-user/network/wifi/connect_client_wifi

Not sure how mesh works in this situation, but with a Wi-Fi extender you just need to plug it in near the apartment’s router and link them together, then you should be able to plug the extender into an outlet near your system and run an Ethernet cable from it to your streamer and all should be well I’d think.  That’s what I’d do. 

Thanks @soix, that's what I was assuming, and I don't anticipate streaming other than radio unless Innuos eventually adds the Amazon Prime Music stream.for which there has been no news for a while.

I may explore creating a secondary wireless node for extra security if I can ever figure out how.

You should do a free trial of Qobuz.  It sounds better than Amazon and will work with your Innuos.  It’s only like $13/month with an annual subscription if you decide stick with it.