To arrange airport transfer services from Colombo Airport (Bandaranaike International Airport) to your hotel and vice versa, you have several options:

Hotel Shuttle Service: Many hotels in Colombo offer complimentary shuttle services to and from the airport for their guests. It's a good idea to check with your hotel if they provide this service.

Private Airport Transfer: You can book a private airport transfer service in advance through various online platforms or travel agencies. They will arrange for a driver to meet you at the airport and take you to your hotel. Similarly, they will pick you up from your hotel and drop you off at the airport on your departure date.

Taxi Service: Taxis are readily available at Colombo Airport. You can simply go to the taxi stand and hire one to take you to your hotel. Make sure to agree on the fare with the driver before starting the journey.

Ridesharing Apps: You can also use ridesharing apps like Uber or Lyft if they are available in Colombo. Just install the app, request a ride, and a driver will pick you up at the airport and drop you off at your hotel.

Public Transportation: If you're looking for a more budget-friendly option, you can take public transportation. There are buses and trains that connect the airport to various parts of Colombo. However, this may not be the most convenient option, especially if you have a lot of luggage.

Remember to provide your flight details, such as arrival time and flight number, when booking any transportation service to ensure a smooth pickup from the airport. Additionally, it's a good idea to have the contact information for your hotel in case there are any issues with the pickup.