Headboarding

After abdicating her crib, my wee littlest one moved to a toddler bed, then on to the floor, and then to a single mattress sitting on the floor.  Most significantly, she is finally sleeping incredibly well - through the night, by herself, past 5:30am.  So, I'll take it.  But, being the design lover am I, it is irking me that there is nothing compelling or attractive about her bed situation - like, a bed!

I'd be a fool at this stage of the game to mess with a good thing by insisting on a pretty bed and/or headboard.  But luckily I can get the look with a headboard decal from blik:

I think I'll go for it.  Which do you think would look nicest in her room?
Deb