MADRID, SPAIN, 2016-1-7 — /Travel PR News/ — Marriott Hotels, the signature brand of Marriott International (NASDAQ: MAR), welcomed Madrid Marriott Auditorium Hotel & Conference Center to its portfolio in November 2015. Conveniently located for Madrid-Barajas Airport, the hotel is the third Marriott Hotel in Spain and is the flagship brand’s largest hotel in Europe. Formerly known… Read the full press release