You get what you pay, by this I mean that you shouldn't expect that much from a place which is being offered below the average price for the location. Tita was a great host in terms of what a host can offer, though the place itself would need some serious renovation, specially when it comes to the top floor bathroom.
I won't get into many details since London is itself an expensive city and I appreciate people with a tight budget can get to afford a visit.
So as a conclusion, I would repeat the same words from one another review which was posted some time before: if you can afford something a bit more expensive, I guess it would be worth it to make your stay a bit more confortable.