What an awkward space! The door opens into the room where the hearth juts out, making it even narrower. In an ideal world I would want to make the fireplace smaller (a flat hole in the wall with no hearth) and change the door to open outwards. However I'm guessing they may not be options! You need the room to work in 2 ways, one as a cosy space for the adults in the evening and the other as a larger clear space for the kids during the day, a tough call! I would consider dividing the room into 2 defined areas, one for kids and one for adults. The adult space should be at the window end and mean moving the TV to the other side of the fireplace. The sofa could go under the end window and 2 chairs either side. This will be a tight fit, would you consider buying a new L shaped one in a more compact design? This could sit by the radiator with a chair opposite. A rug and coffee table would further define this space and make it feel cosy. At the other end, you could place your toy storage behind the door, (maybe invest in some more!) and then bean bags could give the kids some seating for watching TV and playing games. The TV being freestanding could swivel according to day/night position. I hope that gives you some ideas, I'll try to find some photos to illustrate what I mean! Good Luck!

A window seat would be great for storage. I would also add tall storage (in gloss white to reflect light) on either the TV wall or presumably you have an empty back wall at the moment. Maybe add a giant colourful world map mural over the sofa? Definitely add a rug. A coffee table would be good for the younger child to use for crafts etc. You could try one of the mid-century designs that are around at the moment with the painted legs so it suits both age groups. Maybe paint the desk in a brighter colour for the older child to use? Choose a paint with a satin finish rather than matt. A mirror will also help with the light. I think the key is storage though as it is a nice room already.

My advice is to visit an independent kitchen showroom. Oftentimes they have access to more standard priced options than the big kitchen firms. Reduced height cabinets can be set at almost any height by wall hanging them, or changing the plinth height or having bespoke feet. Since standing is a challenge I presume you will also need to talk to them about pull out units (all of my crockery is in drawers which is much easier to access) you can also put fridges, ovens etc at any height making them easier to access. You might also look at different oven doors, some slide underneath or open to the side making access to the oven easier. You can get dishwashers the size of a single oven which might be easier to load and of course can be set at any height. If your overall strength is compromised you might choose bigger handles to open cabinets. If you want over counter cabinets you might choose to have reduced depth base cabinets to improve access to the cabinets above. You can get extractors that work with a remote control which helps future proof your kitchen if at a later date you find yourself sitting more or unable to stand.

It feels bland because floors and walls are beige. (ish). If you want to make a statement about a room. contrasting shades work really well. You have spotlights so the south aspect is irrelevant. Put a dimmer on spots if not already there so you control the light and feel of a room. I presume the fire is staying there so that back wall would be perfect for TV to be put on/entertainment system. Corner couch facing tv wall with chaise lounge on fire side. Behind the corner or L shaped couch, table and chairs so the room is functional for entertaining also and the layout is proportional. The room also has a focal point (TV)