I really like room ideas that have a second floor/bunk option. Seems like a great place to just tuck away and read a book in a comfy chair or bean-bag. Or a nice little round table to do homework. To me, this is ideal for kids rooms when they are older/school age!!!
I think windows meeting at the corner is a must....got to let in all the gray sky I can. And, did you know, gray is how the color is spelled in the US and grey is how the color is commonly spelled in the UK. Hmm.