Ciao, I’m Silvia (Italian in my mid 30s). ...

Ciao, I’m Silvia (Italian in my mid 30s).
I’m looking for a double room with other professionals of my age for a long term stay.
I am currently a lodger with a lovely landlady in Wandsworth but her partner is living with us as well, and it’s kind of awkward being the third one (especially considering that he does nothing to take care of the house).
So I decided to start looking for an alternative. I am quite flexible with the location and the move in date, I just need a good connection with either Waterloo or London Bridge station (shall we say around 30/40 minutes commute?).
My budget is around £900 with bills.
I am tidy and considerate, very respectful of personal spaces but always happy to hang out in common areas (I would rather not living with strangers). Ideally, I would like to live in a place with three of us in total but I can be flexible with that.