That feels like it could be anywhere. I was in Boston last weekend in the Copley Square area, which I liked very much but my impression is it's very expensive.
Most of Boston is very expensive--and certainly the Back Bay. (Which is actually urban planning on landfill from the late 1800s--hence the streets that don't look like cow paths.) The new development (including highrises) is mostly clustered around the Seaport but that's actually apparently even more expensive these days.
