At best it is a 3-star hotel, Room size and cleanliness are acceptable. The biggest letdown is the services that they can offer as standard, and it comes down to a single table tennis table for which you can obtain rackets by paying a deposit. Otherwise, everything else is extra and it does not matter if it is all-inclusive or not.
I think the Thallaso bit is oversold or missold at best on the actual ******* page, as it is not included and it is not worth 35£ for 2 hrs. Some of the council-run leisure centers have better facilities and they need to reconsider the decision on charging for that section of the stay.
The heated Pool at the 9th floor is really small and it is again a paid facility, I really struggle to understand the rating on ******* and it is worth reconsidering.