In early December of last year, Sebastians Café & Catering opened its sixth location on Mass Ave in Back Bay. Now, it's closed. Boston Restaurant Talk noticed that the company's website failed to list that newest location after catching wind of the closure on Chowhound: a call placed to Sebastian's HQ confirms that the Back Bay location is indeed closed, having shut down last week. The now closed Sebastian's served breakfast and lunch including crepes and rotisserie chicken. Five locations remain throughout Boston and in Cambridge.