Neat, tidy, and reasonably pretty or well-kept; not flashy but clean and presentable (colloquial). Often used about appearance, clothes, or rooms.
彼女はいつも小奇麗な服を着ている。
She always wears neat, well-kept clothes.
部屋を小奇麗に片付けておいたから、来客があっても安心だ。
I tidied the room so it's neat; I can feel comfortable if guests come.
あの店は小奇麗だけど、値段が少し高いね。
That shop is neat and tidy, but the prices are a bit high.