Although airport hotels are usually standard and not memorable, this one is a bit different. Located in a local village near the airport, its a chalet-type cozy hotel that's kind of like cabin style combined with business hotel. If you arrive to Sheremetyevo airport, they pick you up and take you back there, that's included in rate. And the rates are perfectly set up for airport passengers, they can be 6-hour, 12-hour, and 24-hour. No need to pay for full night's rate, if you just need some rest between airplanes.
Restaurant food is also very tasty and not expensive. Wi-fi is free, staff speaks English. Their site offers online booking with instant confirmation.
The only drawback is the location, but to most that's an advantage.