It's the single most powerful spell my bard has. And it's the spell I cast the most, bar none.
Think of it this way, I cast it as soon as combat starts, and someone starts taking damage. 2d6 heal! 30 ft range!
And then, as a bonus action, I get to crap out 2d6 every single round. That means if someone is really hurting, I can drop 2d6 on them, and then also hard cast a cure wounds on them, or I can heal two people in the same round. Or I can just do light healing, while doing other funner stuff, like spamming Dissonant Whispers.
And here's the real kicker. IT LASTS FOR 10 ROUNDS! Do the math on that. That's 20d6 healing with a 3rd level spell. Thats an average of 70 points of healing. A 3rd level Cure Wounds only averages about 16 or so. It's also my go-to for out-of-combat healing, for obvious reasons.