Looking for a Cozy Home

I am a working professional who has been sharing a flat in London for the past year.
I keep my own space decorated and tidy, and I pull my weight with all chores. I think a flat should be a place where all flatmates feel comfortable and heard, where any differences are discussed, and where we can chat over dinner or take time to ourselves whenever we want.
I am quiet and conscientious, and I like my own space, but I love getting to know people, especially over a drink or a flat dinner after a long week at work.
I have a lot of passions, including sci fi novels, live music, and all things Japanese (I work as a Japanese translator).
I've been living North of the river and I want to keep it that way! Happy to consider flats above my budget if bills are included.
Finally, I work from how 2 or 3 days a week, but I am very quiet (my current flatmates often forget I am in when I am working).