If you are feeling chaotic...
Guela, Bugrashov, Frishman, and Gordon are the beaches to visit. These beaches are packed back-to-back with matkot (paddle ball) players, guys who are playing hacky sack with balls (not cats), and millions of arsim asking young women "where you from?" If you like high energy and ultimate people watching, then this is the place to be. Alice started surfing at Guela beach, so there are also fun beach activities to do other than dodging incoming balls and fighting for your life for a sunbed.
If you are feeling more chill...
Charles Clore and Hilton are the way to go. Charles Clore is also known as the "dog beach" in Tel Aviv. If you have the power and self-restraint to dog watch without stealing any of them, this is the place to be. Dogs literally roam free here, so do not be surprised if a large pitbull named Buba comes to you and eats some of your watermelon. True story. Hilton, on the other hand (and other side of the city), gives more of a private beach vibe. Instead of dogs roaming free, surfers roam free and catch waves.
While these two beaches are on the polar opposite sides of each other, they function as the perfect chill book ends to the chaos beaches inside.
If you are not in a swimming mood...
You can still view all of these beaches while taking a stroll on the famous tayelet (promenade). There really should be a bingo card for the things that you see on the tayelet. Shirtless guys, dogs in strollers, musicians of every kind ranging from absolutely mediocre to borderline angelic, shamans, people walking on tightropes, and always at least one dedushka singing old Soviet songs. This is close to all of the hotels and there is always room to sit down, watch the sunset, or simply people watch. Alice walks on the tayelet weekly and there is always something new that she discovers.
Manta Ray
A tiny little seaside shack on Charles Clore Beach featuring fresh catches and refreshing cocktails. Find a seat quick because this place will fill up quick.
La Mer
A beachside classic where you can get fries, wine, hookah, and a view of some of the most beautiful sunsets ever. There is plenty of room here, but don't let that fool you. This beachside favorite on Bugrashov Beach also fills up quick.
Lala Land
Another beachside classic on Gordon Beach, this grab a Goldstar and some watermelon with feta while enjoying the ocean view in the shade. The staff is also very friendly and will immediately invite you to a nature party. Another true story.
Greco
This beachside favorite is nestled directly in between Frishman and Gordon Beach across the promenade. If you successfully dodged the matkot and football players, you may also have luck dodging the plates being thrown in this fun Greek restaraunt. Yalla and opa baby.
Louillie
For those of you craving both "disco disco" and "good good," look to Louillie. Located on Gordon Beach, this beachside club offers good food, good cocktails, and cabanas for you to rent with your friends and dance to the music.