If you have a Melalueca day trip booked to see the Orange-bellied Parrots, the Travelodge Hotel Hobart Airport is the closest hotel to the airfield. If you arrive before 6pm, you can use the free shuttle from Hobart Airport to the hotel, otherwise you would have to get a taxi or independent shuttle for the short drive. The hotel shuttle will also drop you at the Cambridge Airport in the morning for your Par Avion trip.
The rooms are fine, nothing anyone would get excited about but clean and comfortable. You only get 30 minutes free internet included with the room.
For people on a budget, there is a petrol station with a Subway inside with all the usual sandwich options just opposite the hotel.
In the large grassy area between the caravan park and the hotel you can enjoy the antics of Galahs, Eastern Rosellas, Cockatoos and several other birds!