Swimming Lessons in Lesson St / Dublin City Centre area?

I think that Marian College off Lansdowne Road and the CRC in Sandymount Ave have or at least had pools. From a guy who still cannot swim.
 
I think the pool in the Mespil Apartment complex allows public access. Access on Sussex st (i think) opposite O 'Breins pub
 
I've been getting lessons in the Markievicz Pool near Tara St. It's €30 for an hour one on one. I'm a beginner so they break that down into two half hour lessons as that's plenty for a beginner. So it works out at only €15 for one on one tuition and the standard of teaching is brilliant I think.