It was the first time, that i used airbnb and i'm really happy about the great experience. Serah replied within 30 min to all my messages. She was very flexible about the check in - i asked her whether it would be possible to check in before the indicated time and it was no problem. Furthermore the room i stayed in and my own bath room were very clean (and the rest of the apartment too). There was everything i needed: shampoo, showergel, hair dryer, map of london and even an oystercard for londons public transport. Serah was very hospitable and also gave me some tipps for my stay in london. I really enjoyed my stay. The only thing i would recommend if you plan to stay with Serah: You could bring some foam earplugs, in case you want to go to bed early.