The grinding is very loud and prolonged, and four parts require  washing immediately after the coffee is done, which is annoying when one just wants a quick cup of coffee. If the grinder, it's lid, the basket, and the basket holder aren't cleaned immediately, they are difficult to clean later. 
The unit is complicated to use the first time for others who are unfamiliar with it, too. I wouldn't have bought this machine if I had known of all of the above.