AT www.yahoo.com type Boston, Massacheusetts cheap Hotels. try it. I think its better if u stay in a motel than in ahotel its much cheaper.especially when making intercourse.Some motels are cleaner than a dirty hotel.good luck.
there is a best western in the fenway area, watch out for motels. if you don't mind the outskirts (meaning you can still get there by the subway) then try Quincy, Braintree, etc