Stephen's apartment is exactly as shown in the pictures - bright, clean and really nicely decorated with many interesting artefacts from his travels. The location is great, quiet and residential but close enough to many touristic and commercial areas (e.g. we walked to the Tower of London in 20 minutes). There are also lots of lovely restaurants and coffee shops close by - 'Amber' in Piazza Walk was good and catered really well for my gluten free diet.
Stephen is great to deal with too. We didn't actually meet him but really didn't need to as he provides all the necessary instructions, useful information and advice in advance and is very responsive if needed.
I would highly recommend the apartment and would definitely stay here when visiting London again.