We stayed at Natasha's apartment for 4 nights and generally had a great time in London. Natasha is a very kind and friendly host. She always seemed to be in a good mood and would ask us every evening how our day was and gave us recommendations on what to visit next. "Living" with her was pleasent and uncomplicated.
Her apartment is small but cozy. The living room and kitchen were nicely decorated, modern and fully equipped (Netflix, Live TV, WLAN, all sorts of cooking utensils, etc.). The toilet has seen better days in terms of stability but it was clean, same goes for the bathroom, which was also fully equipped (apart from toothbrushes obviously). Since Natasha actually lives in there and her room gets probably booked a lot, many things seem to be "used" which is ok considering the low cost for our stay. The matress for example is worn out so we flipped it, which helped a bit. One important apsect one should know is that the apartment's heating is active only during the mornings and evenings, i. e. when Natasha is not at work. Hence, it tends to get pretty cold at night and during the day because the isolation is leaky (not sure if that is a British thing) but there is a second blanket you can use for the nights and an electric heat fan during the day (all provided in the room). We recommend to bring house slippers though. Also for people who are sensitive to noise while sleeping we recommend to bring ear plugs because you can hear almost everything going on in the apartment or on the street (the neighbourhood is mostly quiet though).
All in all we enjoyed our stay a lot, the location was awesome. We would recommend it for a few days trip to London, just consider the things mentioned above and don't expect a totally new apartment.