First thing to say is that Costa is a very reliable and attentive host. Since our first message, he answered promptly and gently, with all the informations we needed. We stayed at his ap for 10 days. I, my wife and our two kids (2 and 5 yo). The flat is small, like he says, but well fitted for us. The kitchen had everything we needed for fast meals for the kids. And it is very easy to get everywhere in london by bus or by tube. Thanks Costa!