You’re perfectly safe, there are hundreds of people going back to the city with the metro at the same time as you, at no point in time will you be alone. You may want to keep an eye on your belongings, though, because full metros are happy playgrounds for pickpockets. ;-/I'll be attending the Ladies Free tomorrow and I'll be alone. It may sound silly, but is the metro safe? I'll practically get in after the event ends and get off at the hotel, but still, it'll be close to midnight. Also, does the metro close after a certain hour?