First of all, it is a license. On the operator's website, you can find info about the legality of this online casino. Next, pay attention to the range of payments offered by the casino. Ease of navigation is also a bonus for the operator. By the way, about bonuses. Don't fall for the pretty wrapper welcome offers, pay attention to the wagering requirements (usually in small print). Evaluate the range of currencies supported by the operator. Study the comments on the thematic forums regarding this operator.