I don't think you meant to post this as a poll. Can you do a rough floorplan so we can see the layout of the room?

How about a loft bed? That would free up some floor space for the other stuff.

I want something that is suitable for him when he will be adult . Do u think that these models is nice for adults too?

I like Maddens suggestion. I would go for a loft bed and you can put a bookshelf on the side.

Loft beds are great for kids but how long do you want this to last? My boys were unhappy with loft beds after the age of 13. Before you know it you will have a young, and probably quite tall, man climbing up and down the ladder which doesn't work so well particularly if you don't have high ceilings. Also, their weight makes the ladder rungs uncomfortable on their feet so think about these things when making your purchase.

I know a lot of college students use a loft bed, but dac_65 brings up a good point with the ceiling height. I am posting a picture that looks a little more adult. But, if you could post a drawing of the room dimensions showing where there are windows and doors, maybe we could help with a more conventional lay-out.