Hi - daily we put in 3 iPads, but had to take one out of its case. (One of the others has an Otterbox Defender, which is bulky; the 2nd had a slimmer case. Left both those cases on.) Leaves enough space on the side about the width of an iphone (placed horizonally), then the space above the iPhone for other small things like a wallet (about the size of 3 iphones placed horizontally on top of each other). Not sure that is clear but HTH! There is much less depth to the safe where the key-lock part is (which is about 3"x2"x1.5" deep into the safe space you use); the 3xiPads fit to the side of that.
Oh - I'm talking about the key-locked safes at the moderates (and I would guess values). When we stayed at the Poly those safes (keypads, no key) are much larger - laptop fits.