Apparently the notice boards in NUIG are a good place to look, ( i must have a look myself!) Also i'm sure if your posted on the Galway group over on couchsurfing.org you might find one!
If you are still up for a language exchange, I could be your partner. My English is good but not good enough for academic purposes. How is your Spanish?
Really? Are you Spanish? It was pretty good, but I haven't spoken it in almost a year so it's a bit rusty. But I'm hoping a bit of practise would help me out!