This corner store on the upper east side on First Avenue and East 61st Street has a good variety of furniture suitable for apartment living (think nice furniture for small places). They carry bookcases, tables that convert from a dining room table to a coffee table, desks, chairs, etc. Salespeople are polite and informed and don't pressure you go buy, answering questions readily. Reasonable prices.
You might be able to get a 10% discount if you sign up for their credit card.