Planar Palace/Resplendent Mansion question

Can material/magical objects be stored inside the buildings created by these spells even after ending the spell? Can I summon my Planar Palace, stash all my loot in there, dismiss it, then cast it again a week later and fetch the loot? Are there any limits to this, or is it just down to the GM?

For example, could a vampire hide his coffin inside and summon it for easy access without having to travel? Or a lich hide their soul cage inside? Or would they be destroyed when the spell is dismissed?

Sorry if this is all obvious, I'm fairly new to pf2e and have tried hard to find a clear answer to this but with little luck.

Thanks im advance!