I don't own a Superhub 3 but hopefully it allows you to change the broadband channel you use for 2.4GHz Wireless.
If so, it might be worth downloading a free network scanner (like
this one) to the laptop, and see if there's any local congestion on the 2.4GHz channels.
I think there's only really 3 usable channels on the 2.4GHz band - 1,6 & 11 so you can cycle through these (depending on the scan results) to see if you can get better reception in the bedroom.
If there's no congestion, then just proceed with one of the solutions Kushan outlined earlier in this thread.