Vin, I think the sign is a sign! Small and cute sounds great, and upstairs rather than ground floor sounds really safe and secure. Stairs with a toddler are only a problem for such a short time. Honestly! My DS is 20 months, and has been scooting up and down stairs with no probs for a good two months now. Only issue would be space at street level for pushchair-you don't want to be hauling it up and down stairs every day.