It's a short walk to Okayama station. The hotel onsen uses Pola and Refa products. Probiotics drinks are available in the morning, ice-cream, and ramen are available in the evening - all free. Beddings are comfortable and rooms are relatively spacious and very quiet. There are toiletries for kids.
Some good restaurants within walking distance - should go once they open or they will fill up very quickly with customers. Make reservations for dinner.
It's worth staying one night in Okayama, visit Kurashiki (30 min train) and Castle.