ya buddy, there are many gym's in doha, but taking in to consideration of Affordable ones, i suggested you this place. i've left from there and now nowhere i'm bit slacky. But soon i will.

They have complete excercise equipments, the problem is that i dont see an instructor(during my timings), btw it isn't a big deal to learn. I prefer go there in person and you'll get a clear picture and ensure its for your standard. if you are so busy look for my post after 2 days, i'll collect there numbers, so you can call.