Originally Posted by
Aquitania
There is a comfortable airside hotel in the international terminal itself (in the duty free area). It is the best choice for a long connection at SVO - you can leave the room and board the next flight within a couple of minutes, without any security checks or hassle.
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Bear in mind you are allowed to remain in transit in the Russian Federation for a max of 24 hours or they will send you back where you came from (numerous examples of this) , unless its a Snowden type situation