The phrase "lukewarm reception" means that someone or something was not enthusiastically received or welcomed. It suggests that the reaction was neither overly positive nor negative, but rather indifferent or unenthusiastic. Full definition
The measure, which would have tied state aid to consolidation agreements, received lukewarm reception in the region. (suncommunitynews.com)
Unfortunately, the earbuds alone don't automatically translate to superior sound, and they've been met with lukewarm reception. (android.gadgethacks.com)
Konami has responded to the rather lukewarm reception of their recently announced plans for micro-transactions in Pro Evolution Soccer 2015, claiming that those who don't want to pay extra can enjoy the game regardless. (gamewatcher.com)