This is the 12576th most frequent Russian word.
комфортнее
More comfortable.
Here, 'комфортнее' is used as a comparative adjective to describe the degree of comfort when sitting and reading in a specific place.
В этой уютной комнате намного комфортнее сидеть и читать.
In this cozy room, it's much more comfortable to sit and read.
Here, 'комфортнее' describes an improved level of comfort in the living room resulting from the installation of new furniture.
После того как установили новый диван, в гостиной стало сразу комфортнее.
After the new sofa was installed, the living room immediately became more comfortable.
In this case, 'комфортнее' is used to express a personal preference for a condition that will increase my comfort.