This is a very open ended questions. Are you looking to rent or buy? When you say professionally managed, do you mean a full service luxury building or a property that is managed by a management company? Also, do you plan on walking, taking the T or driving? It is very difficult to give you a good answer to your question without more information.
Fortunately for you there are many great professionally managed building in the Boston area. The commute to the Back Bay from any of these areas are effortless. Visit my website at http://www.mikefeldman.com and get some helpful hints. Thanks!