Could it make it difficult for burglars

Just the size, the castle already conveyed from afar that it is difficult to what it protects to approach - just as it is made robust and clean and offers the matching hasp (Abus Diskus hasp 140) still provide adequate protection against break-in attempts by Bolt Cutter ,
The 5 key provided are practical, especially when multiple family members in the room must be protected.

Conclusion: Regarding highly recommended performance and quality.