Honest take: NiceWinter.com is a clean, easy-to-spell two-word .com, which is a plus. The problem is that it doesn't point to an obvious business. "Nice" is a very generic adjective and "winter" is seasonal, so the end-user pool is narrow: think a winter clothing brand, a ski/holiday travel site, a seasonal shop, or a café/blog name.
For resale to investors, names like this usually go for low two figures to around $100, if they sell at all. To an end user, a BIN around $500–1,500 is a reasonable ask, but expect a long hold, and most of the interest (if any) will come in autumn and winter.
If you keep it, list it on Afternic/Dan with a BIN so it's visible to buyers, and don't spend much on renewals chasing a big sale.