Why to use 20 Mhz and why 1,6 and 11 channel? Can you please explain?In a hotel situation for 2.4GHz be sure to only use 20MHz channels, protocol=802.11, set distance=indoors, ht-guard-interval=long and only use channels 1,6 & 11 (2412,2437 and 2462).
The access rules you already know about.