Yes, it is a great anchorage. At night there are no cruise ship guests and the swell is only a problem when it comes from the north; this is easy to check beforehand using your favorite weather app, I like to use Windguru BVI. If you look at the app right now, you'd see that CGB is to be avoided for the next couple of days! I 'm in St. Martin and the north swell has just subsided and I've gone ashore for the first time in 3 days - the waves were actually washing OVER the dinghy dock until this morning.

Addnendum - I posted 12 seconds after @manpot and basically said the same thing