About the host, Veruska - She was very fast to respond and very thorough in replying to all my questions/concerns. She is very nice and trustworthy. I felt very comfortable dealing with her.
About the apartment - It's beautiful! very clean. Exactly as shown in the pictures. The location is fantastic, a few steps away from the tube station. A supermarket right next door and a block away from good restaurants. The bed is comfortable, the shower has good pressure and temperature. The wifi is high speed and worked perfectly.
The building is very secure, 2 doors with electronic reader to get in. There is also an elevator, which is great help when carrying luggage.
All in all, a great place to stay in London.