We stayed for a month with our 3 kids.
We loved the location. Pret is 30 seconds away, so easy breakfast.
(Atleast) 4 supermarkets less than 5 mins walk. One of our kids is allergic to tons of stuff (milk, eggs, wheat, nuts, soy etc.) and we were able to get food for her pretty easily - including readymeals (at waitrose) or things like hemp milk (at Holland & Barrett).
Note though that some shops in the area don’t open on Sundays and the others close early.
We loved full step free access of the building. We loved having a washer&dryer and dishwasher. The concierges were very pleasant.
I absolutely loved the quick responses from the host Helen every time I had questions or a request.
It was a bit strange with the office workers able to see in the apartment, but well, my kids had fun waving to them.