I recently stayed at the Churchill as well. Overall, a pleasant experience.
The RC water and fruit in the room was great, especially when they replinished it after a few days.

I agree about the front desk issue. If you haven't been to the hotel before you don't know that the man behind the desk to the right is the concierge (no sign) and the others are either working with customers or busy looking at their computer screens.

Also, an earlier thread shared how 'wonderful' the RC staff was. Well, they were polite and did their jobs but I found them rather cool and standoffish. If I had an inquiry, they would answer it but I always felt they acted rather put out by my asking a question regarding anything from a direction to a church schedule.
(Example: They have Wigmore Hall brochures in the RC. After reviewing it, I was interested in perhaps attending a performance. When I asked the concierge 'where Wigmore Hall was and was it far from the hotel?' The response I received was " It's on Wigmore Street". I had to ask several specific questions to get to the fact that 'Wigmore Hall is on Wigmore Street which is the street that borders Portman Square on the south. The hall is a few blocks to the east". A good concierge would have give more complete information based on the initial inquiry.)

I still miss The Carlton Tower!!!!!