The brokers who answered your question are absolutely correct. Since you also looked at another property on E 57th Street, I would recommend obtaining an experienced buyer's broker who knows the area.
Currently 225 E 57th is repairing the exterior of the building which is mandated by Local Law 11 and required every five years. That's why you're seeing scaffolding outside the building.
I live and have sold apartments on E 57th Street and would be happy to assist you if you don't have a buyer's broker. Do feel free to contact me if I can be of assistance.
Licensed Real Estate Salesperson
Member of Real Estate Board of New York
770 Lexington Avenue, 10th Floor
New York, NY 10065
I strongly suggest you find a broker you are comfortable with, view the property in question and go from there. BTW, a good buyers broker can usually obtain building financials relatively easily. Any repairs, structural or otherwise would be the province of your Attorney as part of his/her due diligence. Good luck.