Nikki's place is a lovely split-level flat, with the entrance, bedrooms and bathrooms on the 2nd floor, and the kitchen and living area on the 3rd (the loft). The loft is open planned (living and kitchen together) and gets great sun during the day - we were there in winter, so we really enjoyed the brief hours of light that came through! It really was quite cosy spot. The beds were comfortable with clean linen and there were plenty of clean towels on hand for our use.
Nikki was excellent to communicate with from the start and very kindly allowed us to check in early and check out late. We had a few questions throughout our stay and she responded quickly even though it was the Christmas period.
She made available condiments, coffee, tea, dish washing liquid and other necessities for our stay. High speed wifi was available throughout our stay.
The flat itself is well located, with the Putney Bridge station (Zone 2) being the nearest stop, 10-15 mins walk away. If you prefer the bus, bus 265 and 22 takes to you to the station right from outside the flat in 3 stops. Bus No 22 also takes you direct to Oxford Circus if you fancy it. Otherwise, all other amenities - banks, pharmacy, supermarkets and other shops are within 5 mins walk at Putney High Street. More conveniently, just steps away from the flat are a Sainsbury's Local and petrol station as well as cafes and restaurants.
Would more than recommend a stay here, as a base for your stay in London and especially if you're exploring south-west of Thames.