8-9 days in colombia in dec/jan. we plan to spend 4-5 full days in cartagena and then another 4 days somewhere else. we are having a hard time deciding between bogota and medellin. we are not going to go to beaches in colombia because all the places we want to stay are full, so will do that on another trip. we are trying to make sure we have enough time in cartagena, and then choosing the next best city to spend some time before heading to mexico for a full week on the beach. we are also traveling w/ a young baby, so can't do too much moving around although a small excursion from any of the above cities works as well. any advise greatly appreciated.