The flat has so many good things, with its location topping it all!
The host, Firas, was extremely nice, easy to communicate with, always quick to respond and had great recommendations on activities in the local area. He waited in the flat when we arrived. He showed us how to operate everything (Firas copied our passport, which I was never asked in Airbnbs, but not a problem). Note that the flat has a washing machine, a dishwasher,
and a 24/7 heating and hot water.
Location is within walking distance to the main London museums (science museum, natural history, V&A), Hyde Park and other places. The nearest tube station is within 4 minutes walking (Gloucester Road station). The neighborhood is very nice, with plenty of places to eat, just steps from the flat. We never felt unsafe when walking in the area, even at night.
The flat is perfect for a couple, or even a small family, as the living room sofa may be used as a bed.
The kitchen is fully equipped with all the necessities for cooking, including olive oil, some spices and even some pasta to cook. Firas left us quite a few Nespresso capsules, and a box of teabags.
Even the view from the windows is lovely!
If I had to pick a downside, it would only be the stairs - this Victorian era building has no elevator, so one needs to climbe 6 flights of stairs, with 92 stairs to the 4th floor. Of course, Firas explained this to us before we booked so we were ready.
To summarize, this flat is a perfect option for a London vacation. Highly recommended! We will surely book it again on our next London stay.