I can't see any way to get much in the way of anything from this.
With no memories, you're unable to even think, let alone reason your way out of a situation. Even if such reasoning is somehow available, why would anything feel unusual.
With no memories, the room would just be the status quo. Nothing unusual at all. Just how it's always been and may always be.
I doubt in such a situation you'd even think to try to open the door. You might spend a few days just playing with the doll before hunger and thirst became too uncomfortable to endure and you were forced to explore the room more fully. Even if you did encounter food and water, you wouldn't know what to do with it without instruction.
You are the sum of your memories. Without them, there's nothing. No personality, no motivation, just a blank slate.