Coming back to Beijing

I am back to Beijing for a couple of weeks, to finish off my work for the Beijing client and submit my resignation. I am still not feeling easy when walking on the street between the hotel and the office. The hotel is great (actually, the best among all hotels I've stayed over my crazy traveling for the past year) but the breakfast room service staff is just still not up to the standard. They greet you without looking into your eyes, and the gesture of showing where you seat is simply not sincere (as if they are annoyed that you have come to the breakfast and bring them enomous trouble). Is it so hard to train the wait staff to be polite, earnest yet not showing the flattering face?