The safe is big enough to store all relevant paper documents whilst having the right size to store a lot of jewelry and watches. 
The compact overall size allows to store the safe discreetly in a closet or shelf. In the same time it is Heavy enough (Around 40kg filled) to not be easy to move away for one person. the code system is easy to use and program. I feel to have a very “Safe” safe.
As points for improvement: The plastic used inside the safe and for the handle on the door is not really premium (and with that does not fit to the market leader in quality and toughness) and when you want to fix the safe on the floor, you lose the water resistance; this last point is a pity as you have to take the decision which risk you want to not cover (steal the safe by taking it out or have a water damage in case of firefighting). 
But these detail points do not harm my overall very positive evaluation of the Sentry Safe.