Spent a week here with my two boys 9 and 10yrs old seeing the sights of London.
The good: nice layout and size of apartment, very convenient to Queen's Park Station, also in easy walking distance of Westbourne Park Unterground and Portobello Road Market, as well as shops on Harrow Road. Many buses as well. Quiet neighborhood. Good heat and hot water. Beds and bedding just fine.
The less-good: as mentioned by one previous reviewer, the apartment pretty untidy and had not been well cleaned.