Only bad point: cleaning
Subject specially latte: If the residual milk coffee all (hot) day in the cup, smell the evening quite nicely. Must therefore you rinse consistently and always immediately soak even the cover in rinse water is best. Regularly wash in a dishwasher, especially the lid.
Had not done, then form Gammel odors and walking away no longer so easy. Leave for a mixture of vinegar, then rinse water and a couple of times dishwasher is with me but so far helped even in the toughest cases.