General Madrid Information available on the web:

• Madrid tourism
• Muni Madrid

Hotels:

• http://www.bookings.es
• http://www.guiashoteles.com/hoteles_madrid.cfm

Some Guides :

• Guía del Ocio
• Time Out
• Softguide
• LaNetro

Museums:

• Prado Museum
• Museo Nacional Centro de Arte Reina Sofía
• Thyssen Bornemisza Museum
The admission to the Prado Museum and Reina Sofía is free of charge on Sundays. You can also buy a Paseo del Arte voucher (8 EUR) and will get a 25% discount on the entrance free (valid for the three above museums)
The Madrid Card combines free admission to the main museums and unlimit use of public transport. Valid for 1, 2 or 3 days (28, 42, 55 EUR).

• Sorolla Museum
• Lázaro Galdiano Museum

Special events:

• Dürer. Masterpieces from the Albertina

  The 58 drawings and the 29 prints in the exhibition have been lent by the Albertina in Vienna. This collection was founded in 1776 by Duke Albert von Sachsen-Teschen and is now one of the most important collections of graphic art in the world. The exhibition also includes the four paintings by Dürer in the collection of the Museo del Prado: the Self-portrait, Adam and Eve and the Portrait of an Unknown Man.