My ideal chair … the Le Corbusier Chaise Lounge is the chair that I have wanted for years for my future library!  I like the cowhide versions (like pictured) but it is also available in plain leather.  So, one day …

Le Corbusier Chaise Lounge

From Furniture Store Blog:

The Le Corbusier Chaise Lounge is one of the most popular and unique chaises available today. It was designed with the idea of “serving” our limbs by providing comfort to the body. Simple shapes contrast with the aesthetic qualities of chromed steel tubing and soft leathers or hides. “The human-limb object is a docile servant. A good servant is discreet and self-effacing in order to leave his master free”. – Le Corbusier