My best advice for hiding guns?
Get one of those $100 sheet-metal Stack-On/Homak gun cabinets. Fill it with inexpensive U-Fix-Em specials from Century, yard-sales, or gunshows, throw in some nasty old air-rifles. Make sure to put some cheaper/older ammo and accessories in with it to make it believeable.
Make that cabinet the door to where the real safe is.
For the handgun, wear it as much as possible. Otherwise get a Gun-Vault electronic box for one or more conveinient places.
For a long-gun, go with a Mossberg or Rem 870 pump shotgun and one of the locking wall brackets. For that, IMO, the best place is horizontally above a door-frame on the inside wall of a closet. Unless it's a walk-in closet where you can turn around and face the door, most people stare in and up at the contents of the closet, not at the front inside wall of it.