Meritage is great and close to the X. If looking for something a bit more informal their bar area is cozy and has a number of more affordable options. Otherwise, I like the food at Ruam Mit, but they have pretty much nothing as far as ambiance goes.
Black Sheep has great pizza, but is a bit more of a hike from the X. Otherwise, of the joints on West Seventh, I'd say the LIffey and Downtown Woodfire are the best bets from a food standpoint.
Amsterdam is also a cool place, but the focus is more so on the beer and music, though their food isn't bad, it's just not a dining destination in my mind (i.e., menu is more or less Dutch bar food/snacks served in paper trays). Good tap list though.