I really enjoyed my stay at MacKenna's place. I was provided with useful tips regarding how to get there, MacKenna was also very helpful in terms of suggesting nice places to visit around the apartment and handing the keys over while I was waiting for my friend to join me.
The apartment is clean, well-equipped and situated in a nice neighborhood full of bars and restaurants. It's also close to St. Pancras International station, which makes it a great spot transport-wise.
Altogether, I'm happy to fully recommend this apartment and I look forward to staying there next time I'm in London!