How do you secure a safe at home?

How does one ensure the safety of a home safe, considering the rise in cryptocurrency transactions and the need for secure storage of digital assets? Could you elaborate on the various security measures one should consider, including the type of safe, its placement within the home, and any additional security measures such as alarms or biometric locks? Additionally, how can one ensure that the contents of the safe remain undetected by potential burglars, while still maintaining ease of access for the homeowner?