Please use spackle.
In one of my apartments in years past, I decided to hang a plant in front of the bay window. The plant was in my favorite yellow ceramic pot set into a really nifty macrame holder.
Apparently the previous tenant thought it would look nice to hang something in front of the window as well.
One of us was JUST off center enough that my hook held up for about ten minutes before my poor plant smashed on the floor. The hole in the ceiling (that made the hole I made too weak to hold), upon further investigation, had been repaired with toothpaste.
But it was me who lost my deposit and my favorite planter, not the previous tenant. Don't burn your karma when spackle is cheap