And if so what did you do?
Im not renting but would imagine if you are in the house on a longterm rental you could just ask the landlord im sure it would be no bother.
I'm renting out a house and would be annoyed if someone did it without asking me but if they came to me and went over a few ideas and guidelines I'd only be too delighted to let them as long as we're not talking full wall muriels. Just remember, if you're to leave the landlord can't really let the house with a nursery in it again so would have to repaint or decorate it back to the way it was.
ours was painted cream anyway so we got some stick on decals that can be removed without leaving a mark.
we got them in atlantic homecare
Some great sites for really cool wall transfers that come off really easy: