We enjoyed our 5 nights stay early january in Ali's apartment, with our 2 kids.
I think Ali manages several apartments. This one was nice : roomy, clean, well heated & good beds.
Easy to get the keys at Ali's office. As we arrived early & the apartment was not ready yet (that was expected, we arrived at 10.30AM), we were able to leave our bags at Ali's office.
Location is perfect : Queensway & Bayswater stations are at 5 minutes walk, Hyde park is 3 minutes away.
Also, easy to find restaurants & food to take away nearby (you can't always have diner outside when the kids are tired).
I can't say about other periods of the year, but in winter, the neighbourood was very quiet.
Only one remark : tableware needs to be renewed... We were 4 (2 adults / 2 kids) but only 3 forks were available. I think this can be easily fixed.
I think also that the price is good value for money, having in mind accomodation prices in London.
Thus we definitively recommend Ali's apartment, for a family of 4 (or any group of 4 people)
Laurent, Ariane, Faustine & Gaëtan.