Utrecht Swimming Pools

Hello friends, I'm a swimmer - I like to swim 3-4x a week in the afternoons. I'm wondering if there are indoor swimming pools aside from the 4 known public pools (de Kwakel, de Krommerijn, den Hommel, Fletiomare...). I was disappointed to find that the one near me (den Hommel) only has one hour of adult lap swimming in the afternoons...most of the schedule is given over to lessons and age-specific activities (under 13 and over 64). If there are any private fitness or hotel pools you know about could you share? Thanks!