Be very skeptical of any such deals no matter who the offeror may be or the credit card company backing the issuance.
If you miss a payment or make any error of omission or commission the interest is likely to be applied retroactively and possible with a penalty. Most likely a much higher interest rate.
And you may find it very difficult to contact them if there are billing mistakes or other such "mix-ups". E.g., some late payment even if you sent a check two weeks early.
Read the fine print. Several times. For the most part none of it will be in your favor.