I flew from YYZ to AMD via Doha (old airport). Overall experience is not so bad except transporting to plane by coach. Embarking from and boarding to plane is by coach but overall management of coaches are good. Security check is quite fast and not so much hold up. Security personal are not checking for liquid in your hand baggage and line moves really nicely. This is for transfer and not sure about passenger boarding from Doha. Airport terminal is quite clean and roomy. Good part is there is a nice play area for young kids and reasonably good quality free WiFi. Washroom are no so clean mainly due to culture of people using them and mostly wet. In rush hours it is crawded and also sometime close one in middle due to close off that area (US bond flights). Not so much food option but overall food is not so costly compare to European airports. Ground staff are not that helpful but Qatar Airways staff are excellent. I missed new terminal by only 4-5 days.