Bringing a few things with you can really give you peace of mind, such as outlet plugs to stop little hands from inserting objects and foam that you can use masking tape to put around the corner of sharp tables/drawers. The tape can also be used to hold down the toilet seat lid temporarily. Enquire with the hotel if they have anything; sometimes you’d be surprised to learn that hotels may have door knob child locks or drawer locking devices. Also, be careful about electrical cords—tuck them behind furniture or unplug things altogether. If there is a balcony, pay close attention to how the door lock works and ask the front desk for assistance making sure it can be toddler-proof.
Helpful Hint: you can put the Styrofoam in your shoes or empty an insulated water bottle to save space in your luggage.