I stayed at the apartment with my 12 years old daughter.
the location was great, and Tatiana left us a detailed folder of the surrounding neighbourhood - places to buy things, eat (and opening hours), where's the nearest underground stations (all about 5 minutes walk away).
the apartment was clean and tidy, and the building itself is new, with a great restaurant and a grocery store in the ground level.
she waited for our arrival even though we arrived later than expected.
there was no wifi, I hope it will be fixed. but she left us oyster cards that were very useful, and a sim card with unlimited local calls.
we enjoyed our stay very much and recommend it!