A "wholehearted recommendation" means that someone strongly and genuinely suggests or endorses something or someone without reservation or doubt. It shows complete enthusiasm and belief in the recommended thing or person. Full definition
I want to share our menu, but also give many thanks and wholehearted recommendations along the way to everyone whose wonderful products we used. (levanacooks.com)
I don't make this kind of wholehearted recommendation very often, but if there's any book you need to read WITH your teenager, this is it!!! (amazon.com)
I can't give this a wholehearted recommendation, but it's still an enjoyable and well - made movie. (rottentomatoes.com)