space is a bit of an issue for us. the room that is Charlotte's is the smallest bedroom (no one tell her the guinea pigs have a bigger bedroom than her) so an adult sized bed wouldnt work.
im not totally against the idea of a mattress on the floor but i think in order to entice her out of our bed and into her own bedroom we were going to get her a bed and a comforter set of her choosing with dinos or whales or something (or god forbid snakes, which she's obsessed with).
seems like most actual toddler beds wont really support the weight of an adult. im thinking we may need to buy her a twin bed (not sure if this is what you meant by an adult bed?)
Oh yeah, twin or whatever size, just that they aren't beds made specifically for kids. 2 of their kids have queen beds and one has a twin cause her room is small.