I was in Costas flat with my parents while visiting London and my brother.
The flat is very nice and clean. U can reach the city by bus or underground in a few minutes. So its very well located. Shops, Pubs and everything u need is close by.
The contact with Costa is great, super fast and very pleasant. He cares about all u need and is very helpful in all belongings.

So highly recommended to everybody who wants to visit London.

Thanks for all Costa!!!