I hope you enjoy wherever you choose and there are some really good restaurants around there. I do want to caution you on a couple recommendations I've seen above.
Longman & Eagle is amazing and I've heard good things about Yusho. I suppose "cheap" is relative, but Longman has $15 small plates and $20-$25 entrees. Yusho is similar (both are $$$- rated on Yelp). Owen & Engine is a gastropub that I wouldn't call a "short walk" from G-Mart. Again, that's a relative term but Google says its 23min from the Square on foot. I am not a big fan of Dunlay's, it's just ok for me.
Also nearby is Ciao - under-rated little pizza place that is right on the Square. It's a couple of doors down from G-Mart. I've heard Telegraph is awesome but that isn't cheap either.
Again, I don't work for Rewster's. I just love that place and I want to see it succeed. The area needs to keep up it's momentum.