Will be attending a conference at the Allegro (171 W. Randolph) in May, and will want to escape the conference crowd for lunch, albeit on a 1-1/4 time budget on Tuesday, and a bit longer on Wednesday. Not picky about type of cuisine, ambiance or price (not crazy expensive though), so long as it's good food and I can get in and out reasonably quickly. I don't mind a short cab ride or walk, but probably shouldn't plan to go too far given the time limitation. One place that caught my eye was Mercadito (it seems close - just across the river). Any thoughts on this, and other suggestions?