If you are going to London for 2-4 days and need a clean place to sleep, with good communication, at a reasonable price, this is the perfect place.
Very easy bus access to the London Eye and Tower Bridge. Metro station Oval - 2 bus stops or 15 min walk.
The building actually looks a bit disturbing and you can feel a slight fear but the neighbors are nice and the apartment is very clean. And this is the most important thing.