If budget is a main concern, I suggest you don't visit Colmar as the place is designed to squeeze every Ringgit from the visitors. Food is expensive, activities is expensive and it is located so isolated for a reason. You have NO choice. For a one night trip, I suggest Frasier's Hill. More relaxing and cooler there too. You can organise hiking treks and this don't need extra money. Food is much cheaper there.