We know you pride yourself on uncovering those gem restaurants before they end up on social media. We’re all for that. But sometimes, all you want to do is stay put at your $5k-a-night hotel, and head to bed after one too many dirty martini sessions. For when that mood strikes, here are the hotel restaurants that are gems in their own right. No scouting required. Just an elevator ride. Hélène Darroze at The Connaught, London. Photo courtesy…