Cath is a very nice host, we enjoyed staying in her flat. There's everything you need: fresh bedsheets and towels, clean bathroom, cozy living room and all the kitchenware you may need. Also there're lots of interesting details of interiour.
The area may seem a bit weird for those who don't know London well yet, but it is safer than it seems. It's very easy to find the house and it's not far from Central line, so it's easy to travel anywhere you want in the city.