Visiting the Edinburgh lounge everything was fine - were I only reviewing that one, I'd say it was "good". In the Heathrow Terminal 5 lounge this was not the case - it was very noisy, some seating areas were rather cramped, the lounge was poorly laid out, but most of all the heat... if the place has air conditioning, I'm not sure it was running, as the main terminal building was actually cooler than the lounge. As a customer, I paid a non-trivial sum so that I could relax somewhere quiet and comfortable between flights, and in this case it was a waste of money.