Each apartment building at Langdon Square Apartments is architecturally distinct, yet the interiors of the four discrete buildings are all equally modish. These Cambridge MA apartments have just been refinished with energy-efficient appliances and fixtures, and live more like a collection of lovingly restored mansions than apartment rentals.   Each of these one- and two-bedroom apartments for rent in Cambridge is covered by our 24 hour maintenance guarantee; and you won’t have to pay extra for heat and hot water. What’s more, you can pay your apartment rental online.   Your Cambridge MA apartment is centrally located on a tree-lined street that’s an easy stroll to Harvard, Central and Porter Squares, and other neighborhood shops and restaurants. You’ll also enjoy on-site parking and easy access to public transportation from your apartment.   If you’re looking for an apartment for rent in Cambridge with the look and feel of a home, look to Langdon Square Apartments.