Great stay at Olivia's place! We stayed with our family of 4, with kids aged 10 and 6, for 10 days. An apartment building which is lively (a little bit noisy), in a great location: many nice bars and some restaurants in the direct vicinity, bus at 2 minutes, underground at 10 mins walk. 15 minutes walk to tower bridge. And some nice playgrounds nearby!
Living room is not that large but comfortable, bedrooms/kitchen/bathroom are fine. The place was clean and the beds were good. Olivia was very helpful; she got us extra fans because of the ongoing heatwave, and came when there was a minor problem with the bath.
Great value for money (given the prices in London), we recommend staying here for a great (family) city trip!