At Americas Best Value Inn Onawa, the hotel offers Queen Rooms with 1 queen size bed and can accommodate 2 adults and 1 child. There are also Queen Rooms with disability access that have 2 queen size beds and can accommodate 2 adults and 2 children. Additionally, they have a King Room with a jetted tub that is a suite with a king size bed and can accommodate 2 adults and 1 child. They also offer a Budget Double Room with 2 double beds that can accommodate 2 adults and 3 children. Lastly, they have a King Room with disability access that has 1 king size bed and can accommodate 2 adults and 1 child. Smoking is not allowed in any of the rooms. The room size for all the rooms is 108 sqft.

Based on the provided data, guests at Americas Best Value Inn Onawa can spend their time by utilizing the hotel's featured amenity, the spa tub. This amenity offers a relaxing experience where guests can unwind and rejuvenate after a long day of travel or exploring the nearby attractions.

The provided data does not specify any other amenities at the hotel. Therefore, it can be inferred that guests may not have additional leisure options within the hotel premises. However, they may consider exploring the surrounding area to find nearby attractions or activities to further enhance their stay.

Overall, guests at Americas Best Value Inn Onawa can enjoy their time by taking advantage of the spa tub and possibly exploring the local area to find further leisure activities.