Feel free to enter the study room, but during the summer vacation, the classroom will be very lively and there will be few people. Before the holiday, a notice will be issued at the door of each classroom to clarify which classroom to open. Well, it is not easy to occupy a seat in the summer vacation, because there are generally not enough students in our school. Better have a classmate.
Contact the school directly, go to a school management office and ask the doorman.
good luck