Frm Baoan Airport, taking MetroLine 1 to Sunon Holiday Hotel, which station to come down? How much?

You can get off the subway line 1 at Laojie Station, then get out of the station from Exit A and walk to the hotel. It costs about CNY9.
If you want to take shuttle bus, you can take the bus 330 from the airport and get off at Shenzhen railway station, then catch a taxi to the hotel. The bus fare is CNY20 and the taxi fare is around CNY10.