When living in tiny spaces it sure gets easier the longer that you do it! Seems like you are figuring it out.

It looks like maybe you have enough space to put the bed on a platform or maybe even make a small loft for it. If you can get the bed up high enough (I like them about a meter high) you can then use the room under it for storage. Generally putting it along the rear wall will not infringe upon too much of the room. Just an idea.

Cheers!