Bit late responding but saw this and thought I'd give my experience of the breed. Apologies for the incoming essay!
I had a powderpuff until very recently. She was, without a doubt, the most loving, affectionate, hilarious and characterful little dog I've ever met (and I work with dogs for a living so I meet ALOT and have 2 other breeds currently myself - they're great but nothing is quite like a crestie)
Cresties are well known for being true cuddlers, as in they'll tuck into you and snuggle you back. It sounds crazy but it's true!
They're super smart and trainable but also real clowns. I honestly can't think of another breed with a similar personality, all the cresties I've ever met have just had this spark that makes them so special.
Mine was full of energy and happy to go for hours but so long as we played or did some brain games she was absolutely fine to miss the occasional walk if necessary.
Total velcro dogs, I didn't pee alone for the entirety of her lifetime, so do be prepared to be tripping over them alot.
All that said, they're generally a very highly strung breed and susceptible to reactivity and stress. My own girl was reactive to literally everything - noise, people, other dogs and it got progressively worse as she began to anticipate scary things earlier and earlier.
I had to change my entire life to fit around her and it was absolutely exhausting. Private field walks, ninjaing behind things to prevent her seeing a trigger. Fireworks/ thunder/ heavy rain meant a night sleeping on the kitchen floor with her.
I adored her but it was a miserable few years. She had me in tears many times because despite being the most loving dog in the world at home with us she was absolutely awful to everyone else and nothing we tried worked. She was that way from the day we got her home and looking back, her mum was the same so I truly believe it was inherited. She was living proof that it's not "all in how you raise them"
That's not to say that there aren't plenty of happy, well adjusted cresties out there. There are, and if you join the FB groups you'll see plenty of them. But I feel it's important to share both sides of the crestie coin to give you some perspective.
I will 100% own another crestie in my lifetime, but I will be far more diligent in researching the lineage and ensuring good temperament.
(If the dog you're considering has any link to the Gemsofjade line I'd urge you to think twice)