basically stay near komtar is just for the convenience of buses as komtar is the 2nd biggest hub for buses.
around komtar immediate vicinity is 4 things, linked together by sky bridges or connecting buildings. (traders also linked to these 4 places)
IT mall, supposed to be like sim lim but its is way watered down. last time i went, only 1 floor is open and not much to buy. prices so so.
1 modern mall, shops like SG kind, G2000, esprit, etc.
govt offices
1 old mall. sell cheap clothes and stuff but the stuff usually I won't buy at all.
from komtar, can walk to famous cendol, and old market for walk walk see. Otherwise, nothing much just a central location.
if u wan to experience difference penang, stay chulia, little india, etc. early morning can see different things. and its walkable to jetty bus terminal where all buses go. Plus chulia is in the heart of most things in george town.