The posted pictures of the apartment are totally faithful.
Pros: nice position (well connected to District, Circle and Piccadilly line, in a residential area between South Kensington and New King's Road), efficient heating system, working appliances, porter.
Cons: size (the living room is a bit small), sofa-bed not so comfortable.
Since I spent 9 days there, the owner Ana was so kind to put a hairdrier in the apartment for me and to use her very efficient wifi account for free (usually, you have to pay for the wifi).
During my trip, position, safety and working wifi were my priorities, so this flat worked very well.