In a nutshell: I loved it and have already booked the apartment for my next trip to London in April!
In more detail: Great size apartment and located in a very nice and lively neighbourhood (be aware that if you are very sensitive to noise you might at times feel disturbed, not so much from the street due to "sound proof" windows, but from quite noisy neighbours in the hallway). The apartment is very tastefully designed and is kept very clean. It also has all equipment should you need anything. I was there alone. If you travel as a couple, beware that the bed is not super wide so suitable for cuddly couples! Tim is super friendly and always there to help if there is anything you need. Looking forward to coming back!