Well, accessing the URL from a desktop works without issue, and I tested on my cell as well without any issue. Likely the cause is the hotel wifi, if you've never experienced the issue before.
As for getting the URL
http://192.168.250.1/info it's a local IP to the network you're connected to (as 192.x is a private range that isn't assigned online, just like 10.x).
FYI, the code that is in Isaac's mod is what's in 7.6.0, which means it's also what we've been running here for months (prior to that we where running the mod, so years); if you've never experienced the issue here then I think it'd be safe to say it's probably the hotel's connection.