I searched these forums for months figuring out the most professional and reliable ground transportation to get from Cartagena to Santa Marta and found no common answer. I let my travel agent plan that leg for us without knowing the company and wouldn't you know it, they chose mar sol. My heart dropped when I saw where they brought me from the airport. Sure enough, the ride was terrible. They promised we would get to our hotel in plenty of time; didn't happen. What should have been a 4 hours drive turned into 6 hours, dropping off countless people and picking up others. Stopping for vendors to sell us food. Also, the van was supposed to leave at 4 and it left at 4:45 (keep in mind our plane arrived at 1:30 and we had a reservation, which we paid a premium for. We had to walk to their office from the airport. The drive was very rude. I could go on and on. Do not use Mar Sol.