Romwe swimsuit quality is mediocre. Romwe doesn't regularly have the best quality swimsuits. Cute, trendy designs and fits do not always make up for inconsistent sizing and poor quality fabric. There have been multiple complaints that the products do not match the photos for the listing.
Some of the swimsuits definitely go against this, though, and could last for a few seasons. Just make sure to check the measurements before you order to ensure the fit is correct.