it's a smart building what means that you need to call the person to open the gate to get in. smart function comes from using smart phone to make a call I guess. you also get out only when person if wake so don't expect early check outs. I also ruined my food since place doesn't have listed fridge. Lights at aisle most likely goes out before you manage to find keyhole but it's only fun to do it in darkness in unknown building. Metal keys are the other smart feature since you use smartphone to give you light when motion sensor lights are out. But oh well, it's cheap!