I hope you have relocated to Boston Successfully, but i would like to answer question.
Of course i recommend you to hire an Real Estate Agent who can helping you to find, negotiate and do paperwork legally. It's very important to do paper works properly.
Major thing is you will be benefited with His/Her Negotiation Skills. You can save your money and can go under budget.
If you like to check about them more use this list of top realtors in Boston http://localservices.sulekha.com/real-estate-agents-in-boston-metro-area