Beacon Hill is expensive, and unless your name is Lowell or Cabot or Hornblower, it is going to be cramped. Parking is a nightmare. Still, it is charming. I lived there for a year, one of the happiest times of my life. Tiny place, but fun neighborhood.Back Bay gets cheaper the more you head towards BU and Brighton away from the Boston Public Garden. Lots of MIT frat houses (nice ones) next to brownstone apartment buildings.North End is the oldest neighborhood, but it was abandoned by early settlers and immigrants moved in, so it now has an italian overlay. Fun, can be a bit noisy, close to downtown. Again, a bit cramped for space.Fenway is pleasant in the spring and summer, probably the cheapest neighborhood you've mentioned for the most space. In the winter and fall, the 'fens' get kind of sludgy, swampy, and depressing. Apartments near the community graden, though, are very nice. The closer you get to Northwestern U and the Museum of Fine Arts, the cheaper rents get. Parking is better.Ask me about restaurants once you've settled in. Always schedule a vacation somewhere sunny for February.