Old San Juan is a must visit if this is your first time visiting Puerto Rico!
Don't be afraid to explore some brunch places! One that we enjoyed in the past is called Tostado (in Condado or Calle Loiza, San Juan) but there are plenty of great breakfast and brunch places to visit in Puerto Rico!
If you would like to adventure to the west of Puerto Rico, Isabela city has incredible outdoor activities, including bike rental in the area and several beaches. Jobos beach is extremely beautiful and has calmer waves. Even this hen was enjoying the beach last time!