Lovely hotel but cold pool and poor management

The hotel is absolutely beautiful, on arrival we were greeted to take our bags etc. We were upgraded which was a lovely surprise. The WiFi is unreliable and we had issues the first evening to be able to stream by daughters program before bed. When we arrived at the hotel we were told that my children would not be allowed in the indoor pool as it is for 16 years plus. This was very disappointing as it was the main reason for booking the hotel. We were then told that the kids club is closed for the week. Again we chose the hotel because the kids club sounded great and it mentioned it went on excursions etc. the restaurant by the pool is hit and miss depending on staff. One day it took 3 hours to get our lunch after them bringing the order out wrong twice- with no apology. We also had to go round chasing staff to be able to order drinks by the pool (not 5* standard). We had friends staying near by and they came over for drinks on our terrace etc. I then was called by the hotel to say that we had left the room a mess and would have to pay for additional cleaning. I was shocked by they as we had tidied up every day. They said that they thought we had extra people staying in our room because we left blankets on the sofa. But we had been watching movies in pjs under the blankets. No one had stayed or slept on the sofa! I asked for the manager to come and speak to me. But they said she was in a meeting. I called back later and they said she had already left and I would have to wait until the next day. It is extremely rude to accuse us of something we have not done - and with no evidence. I said to the lady on the phone to check the cameras as that will prove that our friends left and did not sleep here. Why would they want to sleep on a sofa when they have their own place nearby. The pool is very cold and the children could not last in it. So with them not allowed in the indoor pool and the outdoor pool being too cold/ it did put a dampner on the whole holiday.