DON'T even think about booking here.
1) Flight times were horrible, and they don't tell you when your flight is until the day before your trip. I arrived to Istanbul at 4 AM, and the whole day was gone.
2) They lied and said the hotel was close to where I was staying, but it wasn't.
3) My flight was cancelled and nobody notified me (not Holiday nor the trash airline they booked me with).
4) When I talked to customer support, they were extremely rude and unprofessional. They called me a liar, and said I was making up stories. When I talked to the manager, he told me I shouldn't have used Holday to book my tickets, and that I should have booked my own hotel and tickets online. Well he was definitely correct!
The worst experience of ANY travel agency.