A Mini Living Room Makeover

There aren’t many rooms of our house that I actually like, due to there being work that needs doing in all of them. However, one of my most hated rooms is the living room/ dining room/ play area. It’s a pretty big room at 25ft (with an L shape coming off the side too) and it’s really just not very nice. The walls are white but a bit grubby looking, the dining room floor has gaps in the wood so it’s really cold, there is a bit of stone floor and the living room carpet