We've stayed at YotelAir in the deluxe queen room about a dozen times and, for an airside hotel that already has you through to the airside of the airport, we've been quite pleased.
About a 4 minute walk to M&S lounge, 6 minutes to the TK Business lounge and even shorter to the *A lounge.
Not cheap, used to be able to get the airside room for about 9k Ultimate Rewards points, but now can't find any hotel on the UR mobile site. They've done some sort of "update" to the site and made it horrible.