Do you have any house boat packages for one night
This would be arrange at their for guest, generally such service provider send their candidates to get easily to hire by guest.
We also see such activity at many places.
When we stayed at this hotel we saw people renting large houseboat for a day, i.e. picked up in morning and returned circa 17.00 hours. Have no idea how this was arranged but it did use the landing stage owned by the hotel.
Get an answer from Vivanta by Taj - Kumarakom staff and past guests.