We stayed at 10A Eccleston Square, not the Belgrave apt we booked. It was switched a week before we left, which caused great anxiety. We were met by Fredrick who was extremely helpful, accommodating and quickly purchased a new drip coffee maker we loved. If you are arriving at Gatwick it is an exceptionally easy place to stay. You only walk about two blocks from Victoria station, a transportation hub and you're at Eccleston square. The apartment itself, paint, fixtures, countertops, and the building are quite nice even though it is a basement unit. It is very safe and grocery stores are within an easy walk as well as restaurants. There is limited shopping but it is available.
There is not a shower in the master bedroom, it is a tub only, but a good size bathroom. The second bath is very tiny but has a shower and what I call a half size sink. It looks very new and in great shape. The kitchen is very adequate and has all the conveniences. The bedrooms are small but sufficient. The couch and chairs in the living room need to be updated.
What I liked most is the location. You can walk to Westminster Cathedral only a five minute walk. About a mile walk to Westminster Abby, Big Ben, Parliament, (get Saturday tickets), Buckingham Palace & in the other direction from the flat to Harrods. Sale Pepe Italian Restaurant one block from Herrods is amazing!