Yen's place was the perfect spot for my family's Christmas holiday in London. The flat allowed my wife and I, plus our two young adult kids, to spread out and decompress after a long day of wandering through the city. Away from the holiday crowds but just a 2-minute walk from the nearest Circle/District Line tube station, we could get in and out with ease. The flat was stocked with everything we needed to call it home, including outlet adapters (nice touch). Isa met us upon arrival to show us where everything was and how to make it all work, and both Isa and Yen were always quick to respond to questions (though we had very few after Isa introduced us to the flat upon arrival).
I would very happily stay here again, and I highly recommend Yen's place!