The phrase "little warmth" means not having much kindness or affection.
Sentences with «little warmth»
Despite the sleek aesthetic achieved by wooden floors, the bare boards can feel cold and hard under foot, and rugs provide little warmth or protection. (idealhome.co.uk)
I have one although it provides very little warmth, I need to get a warmer version! (districtofchic.com)
This style is characterized by exceedingly high expectations with little warmth and guidance. (verywellmind.com)