I have not stayed, but will be interested in comments from any who have as Mob House caught my eye for being the most affordable (by far) Hyatt-affiliated option for some early dates in May. Online reviews are generally positive and the property apparently is an offshoot of the new Mob Hotels brand which has a focus on eco-sustainability and personal well-being. For those most interested in central Paris attractions it is a bit distant, but it has excellent bus and Metro access.