I love a small sectional to cozy up a reading nook. My mother currently has a small chaise sectional sofa in a small reading area. She wakes up to reading a book and drinking her coffee and watching her birds come to her window for their morning birdseed breakfast.
I found this sectional sofa in various price ranges. My thought is that even if the sofa only lasts you a few years, which is when you will probably get tired of it anyway, you haven't broken the bank so replacing it would be easy.
Williams Sonoma Home Hyde Sectional = $3900.
Cost Plus Tivoli Reversible Sectional Sofa = $799.99 ($4.95 shipping)