Any time but I really should’ve read the cocktails bit! If in flamingo, go to coco loco for beach cocktails or look up Gracia restaurant for epic sunset views with cocktails and dinner. They have an infinity pool with views over the entire flamingo potrero area. On a good day, one of the best sunsets in the area. If going more humble, take your own in a cooler and head to penca beach. No shops or bars or anything. Just a beautiful beach with a few locals. Nice and quiet