I believe your answer will be found by viewing the second location the way an outside client, customer or interested person would. If there is no staff, is there a reason for anyone to come to your location? Does it have sign, or address on exterior door? An image from you and or verified by Google Street view may answer this.
Google Places is intended to be an index of actual physical locations, their attributes and something akin to word of mouth reputation. If your location receives no real traffic and or goes to all "consumers" then you will have a tough time. My Maps might help you determine location value.
So many people used additional locations (phantoms or actual satellites) to game the system so now Google is very suspicious. I have heard of a Google Place Vehicle showing up in a neighborhood mere days after someone edits, adds or changes a place location. Multiple listings can also cause problems for ranking, be careful, you don't want to dilute or bury your brand.
