It doesn't sound too high, but I would need some more information. For instance, approximately where in Prospect Heights is the apt. located?; what is the square footage?; Is it a co-op or condo?; how many total units are in the building?; is their any outdoor space?; is their laundry in the building?; is their a full or part-time super?; is their a doorman?
Something else you may want to try is doing a search in Trulia for all 2 bedrooms in the same zipcode as this 2 bedroom apartment. Trulia will list for you a number of comps and will also calculate the median price per square foot.