This is a great apartment with plenty of space in a really good location.
All the rooms were generously sized. The beds in particular were huge! There was plenty of space in the apartment for the four of us to spread out. All mod cons were provided and they even supplied little touches like tabs for the dishwasher and washing machine, as well as shower gel and shampoo in the bathrooms.
The building is a large block of apartments with a reception area downstairs. Once inside, the apartment was very quiet. The bedrooms are set back from the road and open onto an internal courtyard. The terrace was a nice bonus to have some outside space in London!
The location is fantastic. Easy walking distance from the South Kensington museums, with a bus stop close to the building and Gloucester Road tube station a short walk away. There's a Sainsbury's on the ground floor of the building and a Waitrose at the tube station. There are also dozens of restaurants and take-aways nearby so you'll have plenty of choice of places to eat!
The owner was very responsive to any communication. Check-in was easy - we just phoned them 30 minutes before we arrived and were met in the reception area. Check out was as simple as leaving the keys in the flat and closing the door behind us.
The apartment consists of one bedroom, with en-suite bathroom, on the ground floor and everything else is up a flight of stairs. Every room has an electric heater that can be instantly adjusted. The wi-fi was great and the smart TV also worked well.
In summary, a great base for exploring London.