Roses do love coffee grounds and using coffee grounds for your roses will help them grow much better and make them much healthier and stronger.
But do not put the coffee grounds too close to the stem or on the stem or other parts of the roses as it can cause a nitrogen burn to the roses which can kill them.
What you want to do is work the coffee grounds into the sound at least a few inches away from the roses stem.
Don't add too much coffee grounds or add coffee grounds too often as it could do more harm than good.
But adding coffee grounds a few times per month or once per month should be okay and keep them healthy.
Eggshells are also good to put in the soil for roses which also help make them stronger and healthier.
You can crush the eggshells up and mix them in with the soil.