Walk down to piccadilly gardens...its out the main entrance of the station you jut follow the path and crowds and you'll come to it.
Then straight on with the gardens to your left down Market St, (loads of shops on it) you can either walk all the way down under the food quarter (you;ll see it) then take a right at the lights and you'll see a **** off ferris wheel (budget london eye) and its just behind that, Tudor looking place pretty big.
You can also walk through the arndale as its at the back of that if its raining, but just ask someone where the Manchester wheel (budget eye lol) and its behind that next to selfridges.
Really easy, 10 min walk from the station about half mile.