Great place to stay - clean and tidy, has everything you would need in a self catering apartment. Very close to the tube system. Plenty of restaurants close to the apartment.
We were there taking part in the marathon, great location as walking distance to the start line.
I had messaged the host the day before arrival to ask about getting the key and did not hear back. Once there we were stood outside the building trying to call and email. Another lady turned up to show us in and give the key. This was all fine in the end but we were stood there clueless for some time! She did message later to apologise and check we were ok.
Apart from this, the actual apartment was perfect for what we needed.