News just in: I think I may just have found the room you're looking for:

There's a quick summary below:
Furnished-Stunning Double Beds. Great neighborhood
Kensington, Central London

Listing ID: L1102035520418

Rent price: 900£ per Month

Live in flatmate: 38 yrs old, Male, Professional

House is located in a peaceful quiet area.
That being said it is an excellent location to comute: -10 minutes walk from busy Bricklane -10 minutes walk from the heart of Liverpool Street -10 Minutes away ... Read more

I'm looking for...

A room in:
London Zone 2 - North of the River plus 1 other

That costs:
£900 per month

a Female flatmate between 25-30 yrs old