I should have added:
We have a nice bright bedroom facing south, which we now have in a lovely colour that suits us. And we finally got decent wardrobes in there 2 years ago.
The spare bedroom is a calm and peaceful blue, which we had re-done a few years ago too. It is currently being used as a spare office space, as we have a "guest" single bed - the 2nd guest bed slides underneath it when not needed so there is space in the room. (Which was very handy when we had au pairs for about 4 years - they had a desk, small armchair, and space to relax away from us, as well as joining us a lot).
DD's room has just been done up to change from a little girls' pastel purple to a teen's aqua colour, complete with decent desk, chair and shelves for secondary school books/work, and a comfy corner to relax in.
The study is compact, but is used a lot for both work and storing craft materials.
We have made the sitting room cosy over the years, getting double glazing, insulating the roof space so the room is warm, putting in a wood burning stove and replacing the internal doors with ones that have a lot of glass to let light through. And we got a carpenter to make proper bookcases built into the spaces beside the fireplace a few years ago, which made a huge difference to the space.
The kitchen is very functional, and work lighting has improved over the years. We now have a small utility "cupboard" housing the washing machine, tumble dryer, hoover and ironing board etc out of sight, and a separate downstairs bathroom including a decent shower. The dining space is comfortable (even if the table is somewhat of a dumping ground), and we have a 2nd sitting space in the extension opening into the garden.
And while that garden is small, we paved the part near the house so it's very usable, I can grow a lot of veg in containers and 1 bed, and we replaced the tiny lawn with gravel a few years ago so it's very functional. There is space around the side to hide the gas bbq when we're not using it, and we concreted in the foot for the pole for the circular clothesline in the gravel which is very practical, but we can cover that foot with the table when we want to take out the line and just enjoy the space. But we also planted a weeping tree near the 12 foot back wall, and allowed ivy to grow up that wall, a number of years ago, so although it is in deep shade, it is a feature in itself and helps the garden feel longer and a lot more lush.