Boston is a wonderful, interesting, exciting and beautiful city but, oh, so expensive as far as hotels and lodging. However, I have found probably the best deal in Boston and that is 40 Berkeley Street. It is advertised as a hostel but I consider it to be a budget hotel since you can have private rooms.
40 Berkeley Street is not for everyone. It is basic and simple. Nothing fancy but it worked for me.
I have written about Boston On a Budget for Yahoo Voices and I am attaching a link to the article. It should be very helpful to those who have never visited Boston as well as others who are not yet very familiar with the city.
If your some reason, you can not click on the Yahoo Voices link, try copying and pasting it for your browser.