A new youth facility in Kai Tak opened on Sunday on a trial basis.
The "Youth Post" hostel, which was transformed from Covid-19 isolation camps, has been renamed "Runway 1331".
About 250 rooms are on offer in the first phase, and youth organisations are eligible to apply.
The Home and Youth Affairs Bureau said it hopes young people from the mainland and overseas will make use of the facility during the summer holiday.
The government has said the facility will be in operation from October and be used for cultural and arts exchanges.
The setting up of the "Youth Post" hostel and spaces for cultural and arts exchanges was first laid out by Chief Executive John Lee in his policy address last October.