There are a range of accomodation options in the area:

Novotel Barossa Valley Resort : https://www.novotelbarossa.com/

Kingsford Estate: https://kingsfordbarossa.com.au/stay/

The Louise: https://thelouise.com.au/stay/

The Lodge, Seppeltsfield: https://seppeltsfield.com.au/stay-at-the-lodge-at-seppeltsfield/

Alternative accomodation can be found at : https://www.barossa.com/visit/accommodation/

Airbnb:https://www.airbnb.com.au/barossa-valley-australia/stays