Hi Josie this is a quick reaction as havent had much time to think,, but for starters the wall next to one with poster on needs using as you say and although corner design sounds good , Im wondering if you would get more out of that space by going floor to ceiling with a fitted unit flat against that wall , not very deep say at a guess without being there,,400mm deep by say 600 wide ,,,(I know you have to access the bed so maybe this wont work but...) ... and leaving an open box shelf within this tall unit for Tv .The rest being cupboards with touch close doors for max storage and no handles.. You could colour block that open bit by painting say soft grey as a feature. That feature could be repeated in a bookshelf elsewhere for example ( We have aspbergers in wider family and understand a little about reducing anxiety from viusual overload.) You could get the makings of that unit in Ikea. otherwise custombuild. Im sure you dont want to rethink your bed purchase but combination storage beds are so varied now ,, finding the right one could be a real investment in the circumstances. Things like ladder position, desk position and clothes storage, will all make a lot of difference as you are well aware already. If your son helps choose it would ensure he feels at home with it. Just make sure your measurements are spot on if you are looking . I can see a few mm could be crucial if it doesnt fit. Im finding it hard to make out the real position of the end of the bed and the "jutting out " bit of wall, A rough floor plan with measurements in cm or mm would help . Having worked in kitchen and bedroom design I must say you do have a challenge here josiewosie woo1,,sorry nearly forgot the woo... But theres always a solution !! Apologies this is a not more comprehensive an answer but do see your dilemma here and the reason why you need throw it around. Your ideal answer is really a good local,' design concious' carpenter/handyman who would refit room from scratch. ( I do have one at home but unfortunately hes not available right now Sorry....) All the best with your plans.

High Fashion coffee table books are my go to, however i tend to opt for photography rather than some thing as ostentatious as a Cartier book, my new edition is Arabian Horses by Assouline and it is a masterpiece

Embrace your garden this winter and make it a cozy place to huddle up with friends. Create an enticing space to enjoy sipping a cup of mulled wine. The key is to choose a small area close to the house, use lanterns, fairy lights, a few fur rugs, plenty of blankets and a fire pit to gather round and create a focal point. I was amazed by the bustling winter café culture which exists in Scandinavia. By creating the right environment with the help of heaters, fleece blankets and candles you can create an cozy outdoor area to enjoy a steaming mug of hot chocolate. Good lighting is also essential, particularly in winter when it can be dark by 4pm, You can still enjoy your outdoor space if well lit from the warmth of your interior space. Be sparing in your use of light, subtly illuminating key areas. Try to avoid glaring security lighting which will give a flat cold light. I always recommend lighting within the beds to illuminate the planting. Select evergreen plants and position the lights beneath to create atmospheric silhouettes of the leaves. This is also the perfect time to survey your garden and plan for the spring, it may be just a case of pruning or relocating plants or you might be planning a grander scheme and thinking about a complete re-design. This is the time to get to work with the plan, make notes and asses what has really worked this year and what has failed. I always think its essential to study a garden through all the seasons to see how the light falls before re designing a garden. Put on your thermals and get away from all the stuffy central heating, enjoy all your garden has to offer this winter!

We have a jack and Jill to the front of the house, soil pipe vent comes out the roof ( just noticed that). I'm seriously OCD with symmetry , I got another outside light added as it was the only thing throwing the house off, yet I have a frosted glass window directly above front door and have never noticed it until this thread. So personally it doesn't bother me, other than its bothering me now that it's never bothered me lol.