I suggest Bitfinex to anybody seeking for a really safe crypto trading platform with incredible professional features such as a user-friendly yet complex interface, simple verification with a low average waiting time.
Fees are extremely low or nonexistent in certain cryptocurrencies, and there are a plethora of high-quality goods to trade. They accept a variety of fiat currencies for deposits, which is significant in my perspective because before they only accepted USD, making it difficult for certain individuals to deposit through fiat.
They do have certain drawbacks, such as the fact that they are not permitted in the United States, that the verification period is not less than one day, and that the platform, though decent, is difficult to use for new users unless you are a trading professional.