A difficult question... It is convenient to get to Brighton with a transfer to London. The city is connected with the capital by an active bus service, the journey time is about two hours, and you can get from London by train in an hour. If you are traveling by your car or plan to rent a car, keep in mind that there is almost no free parking in the city. The highest price for parking takes place in the city center. I traveled by train because I traveled a lot, and I always needed a schedule
https://www.dbauskunft.com/de/. There are many bars, nightclubs, and casinos on the city's central streets. If you are used to relaxing in a relaxed atmosphere, it is better to choose a hotel away from the noisy central streets.