Hello again...Well, I believe there's about 78 or so towns around the island so your in for a treat. My wife and I have dicussed exploring each one if them as well. Such a great way to make new friends and truly savour the PR culture. I'm thinking your best is to find yourself an older dependable vehicle for little money, find them on classificadosonline....again depending on your situation. If you rather not drive yourself then I'm thinking since distances here are very close to each other, choose for example say the eastern part of the island, using an uber to transport to a Parador or a guesthouse as a home base, drop-off your luggage then use the local transport buses or vans to explore the
surrouding towns. From there rinse and repeat. Hope this triggers some other ways you can enjoy the Island. Have fun!