Isn't it the hotel that asks Hilton to change category?
And aren't points amounts now based on the flexible rate? It's available for 14k on some dates, works out to about 14zl per 1000 points or 0.38 US cents per point which is broadly the same as other properties when the points needed is lower than the max. So if it was 3k points the flexible rate would have had to be around 10 euros
Gdansk Airport and Krakow Airport Hamptons also 20k now