Air Rooms Madrid located in the basement of Terminal 4 at Barajas International Airport is as convenient as it is modern and functional. This is strictly a hotel for business travelers or those in transit overnight however, it can also be rented from 3 to 6 hours during the day which is also super convenient and helpful to a weary traveller. I stayed one night because I had an early trans-continental flight at 6am the following morning. I paid about $170 which I was okay with. What made it a spectacular deal is that wifi was free (not a given at any hotel) and they have a 24-hr a day lounge with coffee, tea, snacks and in evening beer, wine and liquor in addition to sandwiches. Breakfast is simple but sufficient and, as I said, it’s all included. Take into account the cost of a coffee or a bottle of water in an airport and you can quickly see this hotel is quite a good deal. Be sure to give it a shot while in Madrid or at any of there other locations which number in the dozens!