The Market Studios are on the cormner of Halston Street and Mary's Lane, right beside the old Fruit Market near Capel Street. Nearest Luas stop is Four Courts, or it's a straight walk down Henry Street and Mary Street from O'Connell Street.
This is a link to the studio on google maps here:https://goo.gl/maps/FogxE9aDvF7Y8bjb6
Note: This is a taught class with a nude model. Places are available on a 'first come' basis, but the room is big enough for everyone. Participants are free to bring their own materials if they wish.