The apartment is on the older side and not in a super nice area. There is clear water damage on the walls and there was a dusty/moldy smell that we needed to get air freshener to dissipate. The apartment was also very hot as London happened to be in a heat wave, and the windows did not open very far -- it did not cool down much at night.
That being said, it is upgraded with very nice pieces e.g. a comfortable bed, nice sofa, TV, pretty fast wifi, etc. and it was by far the best place for the price we paid. It was also very convenient to the subway and bus, with great restaurants and cafes nearby.