Looking for a place to stay for 1, 2 or 3 months

Hello,
I am a young actress and I want to do some workshops in London next year. Therefore I am looking for a flat in London Travel Zone 1 to partly or fully (I don’t mind moving, I only have a suitcase anyway) cover the time I’m staying in London and I’m would like to pay upto 850£/1000€ per month. Move in would be 8.1.2023 and move out I’m flexible about 1, 2 or 3 months after.
About myself: I am 24, I have lived alone and in Shared flats for the past 6 years and just finished my academic degree in Theatre acting in Germany. I also make my own music as a singer and producer. I can take care of plants or your mail while you’re away. I’m also very social and always happy to meet new people, but absolutely fine if you want your privacy in your home.
Thank you for your time!
Best
Katharina