We sailed on MSC Poesia in April and no the cabins don't have tea or coffee making facilities. We took a travel kettle with us and just got sachet's of tea nad coffee from the buffet. If you order room service breakfast, you can keep your milk in the fridge in the cabin.
Just read the MSC brochure concerning your cabin. If it says that it has tea/coffee making facilities, then it has. If it does not say that there is, then there isn't. It is that simple! Unfortunately I think that you will find the answer is no. Happy cruising.