You can take a taxi to Xi'an Road, which is relatively prosperous.

Xi'an Road is a commercial street.

You can also take a taxi to Xinghai Square. Further on Xi'an Road is Xinghai Square.

Xinghai Square is close to the seaside, and the restaurants around the square are very good for seafood.

Dalian is very small, and 10 hours is enough for you to explore.

However, you need to pay attention to the time when returning to the airport. Sometimes there will be heavy traffic jams.