Discovery of Safe House

I guess this safe house will be the base from which all the operations of the team will start from. Sort of a hangout for the characters in between the missions where you can rest and maybe adjust your equipment. Probably we're going to get most of the lighter tone stories happening here while they're eating or just simply talking.
I wonder if it's safe to use the old base of Arrow though, wouldn't the people who targeted him already know where he was hidden?