I'm guessing if they see McDonalds coffee as "okay and drinkable", this might be a different problem than the way the hotel makes the coffee. Or maybe the McDonalds we have here in Spain is just much more terrible than in the US, but I'll take random bar/pub coffee or even machine coffee over what they serve at McDonalds.

This will do as much to solve your problem as talking to Google on why a search result was bad. Even if they agreed they won't change their coffee machine while you're there and they won't rehire more skilled staff etc etc.