many thanks for your advice! I take note of it and will talk to the maid that cleans it up! I'm a Little bit disappointed with her for this matter as I always remind her these issues. Usually I leave coffe in the apartment, and receive personally my guests when ther check in. the problem is that I was in Argentina form a long vacation (sometimes uncomunicated), and something went wrong. I apologize for any inconvenience caused. kind regards and hope all the best for Y2015.