My impression from going through the MLS and the brokers website is that the property is not in the current MARIS database, it may however be in the commercial database, which I'm not able to access at the moment. In 2006, the rent was $550 for the apartment. It doesn't give a rent for the beauty salon, however, the way I read the writeup, I don't think it's currently leased out. I think it's empty. That's why they are giving you suggestions on different ways to use the space.
let me know if you'd like me to ask the listing agent some direct questions for you.