I agree that wherever possible, all the kids in a family should have equal size rooms, loads of space etc even if some of those rooms are used sporadically.
However, being realistic, how many of us stepfamilies can usually afford to buy a large house with umpteen large bedrooms ?
Unfortunately, someone will get the smallest room and it makes sense to me that it should be the child(ren) whose room is used the least. Of course it should be decorated to reflect the child concerned, and of course they should have space for toys but your DH needs to remember his other children too .....
.... believe me, they will soon notice if their brother gets the biggest room and will put 2 and 2 together noting that the room is hardly ever used. Why should they feel 2nd best when they are at home all the time ?
SS will of course have his own room - I presume - at his mother's house where he lives most of the time ? I think that there shouldn't be a big deal made of SS's room size (because it's a practical solution) but ensure he's included in choosing wallpaper, bedding etc to make it feel like his.
To be fair, we don't know ToC's background and regrettably, though we'd wave a magic wand if we could and make it different, some stepchildren do have pretty intolerable traits which make their visits very stressful. Admittedly, in my own case, this is largely due to the spite and bitterness of DP's ex who uses their children as weapons, resulting in bad behaviour, but it doesn't alter the simple fact that the child before you is difficult to deal with and that visits are a strain for many reasons ..... something my own DP readily admits (and is sad and frustrated by).
I do see where ToC is coming from with her "just because I think my kids are the bees knees, doesn't mean everyone else will", because I feel the same. I love my kids but I'm aware that other people may not feel the same because they are individual personalities who may not appeal to everyone else. It may be a controversial thing to say but logistics dictate that as an adult you will not necessarily hit it off with every child you come across - skids included. As a stepmum you may make a huge effort - as you should - to involve your skids in all aspects of your family, but "love" and "liking" are not switches which can be flicked on and off at will. Why does it always cause so much controversy whenever anyone indicates, directly or indirectly that they find their skids hard to like ? .......... the women who say this have often spent years bending over backwards to get to know these children and form a close bond, but if the chemistry's not there at the end of the day, it'll never happen ..... in the same way that as adults, we are not expected to hit it off with every other adult we meet - relatives included.
I'm not only a stepmum but my oldest son is also a stepchild himself. I have never expected my ex's new wife to be his best friend and I honestly don't know what her feelings for my son are. I get the impression from my son that they rub along but aren't close - and that's fine by me, so long as she is kind to my son, that's all I ask. BTW, when my son goes to his dad's, he sleeps on a futon in their study whilst his 2 further children have their own rooms. I have no problem with this and neither does my son - he doesn't feel pushed out, he simply recognises the logistics of the situation.
ToC, I do sympathise with you. We pushed ourselves right up to the max, far beyond what was sensible really, to afford the house we're in so the skids could have their own room. It is used only EOW at best (DP would like to see them more, but 1 has been alienated by his mother - and yes, the background and what's been said/done/written etc does indicate very very strongly that this is what has happened - and contact with the other child is regulary disrupted/obstructed at the very last moment. So, we have an empty room 90% of the time which doesn't even make it's keep as a spare room as we hardly ever have anyone to stay. We're paying £2-300 a month extra for this bedroom and are right up against the wall. Any out of the ordinary expense and we get further into debt.
To my mind, we should have bought a smaller house and had the skids stay in the dining room on futons. I know that's not ideal but neither is taking out a huge mortgage you can't really afford. I felt pushed into this purchase because of DP's feelings - understandable, but unrealistic in the circumstances - that his kids should have a room to themselves. As a side effect of this house being bought so the skids could have their room - sporadically - my son must now do a 30 mile round trip to school every day.
I appreciate that many men feel "guilt" (particularly if there is a bitter ex in the equation ready to jump upon and stir with any "proof" that the skids are being penalised) but equally, post-divorce, there is only so much - practically and financially - you can do. If we were able to afford a huge house with a room each for the skids, then I obviously wouldn't say no ..... but you have to be realistic.
In the same way I question whether it's "fair" (I know it's a grey area) that we are going into debt and my son spends 3 hours travelling to school EVERY day, so the skids can have a room around 40 nights a year, your DH ToC should face up to the fact of whether it's "fair" that your (yours and his) children should only have limited space available to them EVERY day, so his son can have much more space EOW.
I appreciate he wants to do the best for his son but what about his other kids too ?
(Sorry to have ranted on on your thread BTW).