italnstallion99
If you want to take the bus you will need a taxi to go to santo domingo first as the airport is about 20 minute ride from SDQ
I think the last bus leaves SDQ around 4 or 5pm so depending on your flight time this may not even be an option for you. If you fly into SDQ later than 3pm you would not likely get to the coach station in time as it is a good 20 minute taxi ride to the caribe station from the airport.
I arrived at 3pm and ended up just jumping into a taxi which took me straight to the New Garden Hotel.
I would suggest that you contact the New Garden and they will arrange for one of their own drivers to go to SDQ and meet you at the airport. The Cost will be around $200 for the trip and obviously if you are with friends the cost will be shared amongst yourselves.
It is the easiest way for you to get to the hotel without hassle and worry. Also if you take this taxi, you have the option to stop along the way (most drivers will take the mountain road up to moca) and get something to eat or just have a beer and take some shots of the view.
hope this helps
dave
edit. if you coming to STI then Why are you even thinking about the bus? just call the hotel and they will send a driver to meet you. Not sure of cost but just ask them when you call or email.