A friend and I are looking to travel to the Philippines in February. We will be leaving around the 13th/14th and will only have 5 days to spend there. Could we have an enjoyable, relaxing holiday in this time and still see some of the main sights (Underground River would be a must)? Could anyone suggest a possible itinerary for this amount of time? Or recommend elsewhere in the Philippines that would be better to do in our time frame?