Flat is in good shape, as shown in the pictures.
Quiet neighborhood, ideal for relaxing after a stressful day in the city-center. Closest supermarket is around 10 minutes (walking distance), which is acceptable. Several (fast food) restaurants and some surprising cafés to have a lovely brunch around metro station (20 minutes).
Flat is quite far from the city-center (20 minutes to station + 30 minutes metro), but quality & price significantly compensate distance. To my surprise, even though Tooting is in metro's area 3, fare is not higher than moving around the city center (area 1).