Caleb Wertenbaker’s amusing unit set — a back alley with dumpsters, a pay phone, and portapotties, with two smaller “stages” behind corrugated metal “curtains”
-Lloyd Schwartz, The Boston Phoenix

Caleb Wertenbaker's set was an abandoned concrete buliding flanked by dumpsters and three portable toilets.
-Heidi Waleson, The Wall Street Journal

Helfrich and scenic designer Caleb Wertenbaker go to great lengths to make the new Mahagonny look disturbingly up-to-date. The sets suggest the back of a timeless, foul-smelling rest stop off of any American highway. Singers make their first entrances out of porta-potties, which later double unsentimentally as fornication pods. When dead bodies need to be disposed of, they are put with grim efficiency into small dumpsters.
-Jeremy Eichler, The Boston Globe

...a single, flexible, and utilitarian environment that could have been an abandoned factory or the back of a truck stop in the middle of nowhere. Flanked on stage left by a row of three porta-potties, and on stage right by a dumpster, the main structure's loading dock with its roll-up door served as a dandy stage within a stage, alllowing the set to expand and contract easily as the action demanded.
-William Fregosi, Kurt Weill Society Newsletter