From the reviews of the second edition:
The aim of this textbook is to show how thermodynamic behavior can emerge for a given finite quantum system. ... The book is written in a conceptually simple language, the focus being rather on the careful interpretation of the concepts at hand and their illustrations on model systems. ... presents some applications to model systems, which allows one to illustrate more precisely previously introduced notions. (Gabriel Stoltz, Mathematical Reviews, Issue 2011 f)
This book introduces into the emergent field of the application of thermodynamics to describe phenomena arising with open quantum systems which consist in one or few particles. ... A clue of this book is that ergodicity or mixing are replaced by a kind of typicality which is introduced and used as a basic concept to define equilibrium. ... This is a heuristic approach and the results derived show how it works well. (K.-E. Hellwig, Zentralblatt MATH, Vol. 1221, 2011)