Hi,
I copy and translate some fact from the the Császár's website:
Address: 1023. Budapest, Árpád fejedelem útja 8.
Type: sport swimming pool
Area: 11.456 m2
Floors: 3
Pools: 5 (2 of them are educational)
reach by: 6, 86, 60 bus, or 17 tramway
It has two part, I think Nina unfortunately went to the Komjadi part (the big covered) which is closed for public,
but Császár part pools
openair 50m competition pool:
monday-friday : 6-13.30 10 lanes 50m
14-21 6 lanes 25m
saturday: 6-21 10 lanes 50m
sunday: 6-19 10 lanes 50m
Császár 25m pool:
monday-friday: 6-14 4 lanes
saturday: 6-21 6 lanes
sunday: 6-19 6 lanes
Császár openair educational pool:
saturday: 6-21
sunday: 6-19