Hi , would this be a good choice for an adult?

Our mattresses do not discriminate by age. :) That being said, we typically sell this one for kids and teens and upgrade to a better quality model (with individually pocketed coils and a more robust topper) for adults. If it is for a guest room, it would work fine. If it is for an adult to use daily, I think you will be more satisfied with a higher-quality mattress. Can you visit the showroom? We have a few new models you may like at good prices.