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.

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.

McCafé in Germany is drinkable. The coffee in the restaurant after dinner was superb. They just had a typical crappy coffee machine with shitty coffee in the morning restaurant.

And yes: I talked to them.