It might be worth looking into a stove with a faux chimney breast. Just looking at your sofa, lamps etc it looks as if you like a classical/transitional style? If you did opt for that and it's feasible to install again I might position it off centre. http://www.woodburners.com/installations/no-chimney,-no-problem.html you may hate this idea but I have a large oriental wardrobe next to my fire which houses the tv. Your tv doesn't look huge so it may be an option if of course you like it. I only know of this one which is an actual tv cabinet or you could do as we did and drill holes in the back of the wardrobe (it obviously needn't be an oriental one but one that doesn't scream wardrobe!) https://www.oka.com/peking-handpainted-chinoiserie-tv-cabinet.aspx Although if you had a fire as the focal point you may find the tv fades into the background or paint the alcoves a darker shade etc. Re rug I suppose it depends if you move the leather seats into the play room but something with a subtle pattern might look nice? Have you looked for anything else to replace the leather? I like the storage unit you've found. It looks as if your side tables would work the other way round so you could have a media cabinet for cd's and dvds where the toys are currently stored or an apothecary cabinet may work well.

fireplace query.. photo didn't attach last time ..

As Jen said painting the short end walls in a warm or dark colour helps to correct the room proportions as it brings the walls in. If you're not keen on that I'd just keep the same colour on all 4. The way you've arranged art is good in separate groups as it's breaking up the length of the walls. Have you considered adding a large mirror/s on the long walls? Normally bringing some of the furniture away from the walls helps so you have something in the midddle of the room, is that a footstool or is it attached to the sofa?! I would also add floor and table lamps (regardless of room dimensions) as it will make the room feel bigger at night if some of those corners are lit. You could also add a rug, horizontal stripes are good but something like a diamond geometric would work too

Hi Helen, it's all about the undertones. All colours have a 'bias' towards one colour, for example Cornforth White has a blue (cool bias), Bone has a green bias, Joa's white has a red (warm) bias etc. As long as you choose colours that have the same bias you should be ok. The other important factor is the aspect of the room. If a room is gloomy, you need to be really careful about what colour neutral you choose, avoiding ones with a blue bias as they will feel cold.