A new boutique hotel will open soon in Madrid. The facade was recently unveiled, according to this report (in spanish). Each floor is designed by a different architect, including Jean Nouvel, Javier Mariscal y Fernando Salas... (Updated. Open item for info and comments)
...Arata Isozaki, Richard Gluckman, Kathryn Findlay, Narc Newson, Ron Arad, Vittorio & Luchino, Eva Castro y Hoger Kehne, David Chipperfield, Norman Foster, Zaha Hadid, John Pawson, Christian Liaigre, Marc Newson, Harrieet Bourne y Jonanthan Bell, Arnold Chan, JasÃƒÂ³n Bruges, Teresa Sapey, y Felipe Saes de Gordoa.
Update A story in el mundo says that the hotel's exterior is the work of Nouvel himself. The facade is a multicolor scheme that at moments spells out fragments of a poem ('Liberty') by Paul Eluard in different languages. Other facts: The hotel, when finished will have 342 rooms and 12 top-story suites (by Nouvel). Nouvel called his 12th floor "libertine," playing-off the poem bit.
A lot of the other floors in the 5-star hotel will feature high-tech surfaces and devices. Kathryn Findlay will use an interactive wall that "records" movement in the halls and Ron Arad wants to flash images of people in the elevator as they pass his floor.
Also, there seem to be some discrepancies between the participating architects named in the two newspapers, or el mundo has a partial list.