Where exactly is he teaching? At the ISC or at a PPP school? I work for SABIS also, in Duhok, which is about 45 minutes from Zakho. I've only been to Zakho once to do some shopping. They have a decent sized City Center there for shopping and it's close to the border of Turkey. Some of the other teachers cross the border into Turkey there and then take a flight or car further in for vacation. We have another staff member that is the trainer in Zakho, so she goes everyday. The winter is beautiful if you like snow. I don't know how much snow you get in Suli, but in Zakho it's really nice weather.
The director is a great guy, but new, so he's been doing a lot of training at our school and the ISC in Erbil. I've met all the teachers from Zakho, except the expats. There are a number that lived in the US and one that lived in the UK. They seem nice enough.
I hope that helps :-)