The extension to my house was built (I estimate in the 1930s) using terracota hollow blocks with stucco over. For some decades, the stucco had vinyl siding over it, which was an awful choice because it couldn't be properly attached to the hollow underlayment (fasteners didn't bite into the hollow blocks), so it was detaching and I ripped it off. That exposed the stucco under, which was old, cracked, and ugly. I did some repairs, which can be seen, to improve waterproofing, which didn't make it any prettier.
Now, I would like to restucco and make it all look nice and smooth. But I am not sure which material to use. I have used regular mortar/stucco from the Home Depot, the same thing for laying bricks, to stucco a brick wall and thought it was hard to make the final coat smooth. Are there other, more specialized products that can be smeared or maybe even applied with a roller that would provide a thin final coat of stucco over this old, rought surface that I have?