It's not true to say the Knightsbridge apartment has an absence of taste- its completely in keeping with Knightsbridge.... You pay a lot for that kind of expensive but anonymous, could move in/move out at a second's notice, plenty of wipe clean surfaces for your staff to wipe away any evidence if necessary of coke and escorts, and crucially no artifacts to remind you of who you are and what you're running from. A lot of Knightsbridge apartment blocks have that feeling of temporary rootless living in a security enclave in huge comfort.