LOL! It's a hotel right next to the king of prussia mall. It doesn't get much more white suburban than that. Pretty sure you won't be met by machettes, machineguns, or Lo Pan.
I do understand getting that funny feeling, never a bad choice to go with your gut. Plus, Costco always has something good. I go there for toilet paper and somehow always wind up spending $300.
Intel wise. I've seen a number of different providers at that hotel over the past 6 months, have never had an issue. The elevators are right inside to the right before the front desk so staff never see you. Honestly, I've seen independents at almost all the hotels in KOP.