East China Airlines transiting passanger arrangement for Hotel at Hongqiao -lay over 22H50M

Travelling from Kolkata- India to Tokyo Hanida.Long lay over at Hongqiao International Airport.We like to know (a). as to whether the Airlines make arrangements for the transit passangers Hotel /or other accommodation at the transiting AIRPORT (b). We are 4 Indians- from one family - all senior citizens-but NO support required - for exploring the marvellous City whether without any formal VISA are we permitted or not permitted what type of Visa i.e.,TRANSIT or TOURIST is required (c) Since direct confirmed ticket with the same Airlines is there,whether TRANSIT VISA is available at the arriving Airport ?