EUROPE'S longest hotel is opening this summer - and flights there are cheap. Mercure Szczyrk Resort, in Poland, will become the longest on the continent. 6 The longest hotel in Europe is to open this summer Credit: Accor 6 The hotel will have more than 400 rooms Credit: Accor 6 Pools, spas and bars will all be on-site Credit: Accor Inside the curved 330m building will be 446 rooms, each with panoramic views of the the Silesian Beskid. With nine floors, it will also be the highest-located hotels in Poland when it opens. As well as two restaurants and three...