For example, 3/7 "nightclubs" it lists in Croatia are not nightclubs. I would also group Kalypso and Zrće Beach together as Kalypso is one out of 4 nightclubs located on Zrće Beach, but the beach itself is not a venue. Similarly, Barbarella's is kind of an afterparty destination for festivals organised at the Garden Resort. They only match 6%, but I wouldn't call them completely separate. This is the kind of "lore" that's impossible to catch from raw data.
I like the Essential Mix visualisation even more! It's such a shame most of the other ones appear dead due to API changes.