Spa By Kasia opening hours are as follows:

Spa Reservations - Monday to Friday from 9am to 6pm, Saturday 9am to 1pm
Health Club Facilities - Monday to Friday from 6.45am to 10pm, Saturday and Sunday 8am to 9pm
Treatments are available Monday to Thursday from 9am to 8pm, Friday 9am to 7pm, Saturday and Sunday 9am to 6pm