Each hotel is attributed to the nearest settlement / town; but it might be 100 kms away!
You will find the following accommodation properties listed here, out of town but close enough:
to the north-east of Otjiwarongo: Frans Indongo Lodge
to the South of Otjiwarongo: Waterberg Rest Camp (Namibia Wildlife Resorts)
to the South of Otjiwarongo: Otjiwa Lodge
to the South of Otjiwarongo: Okonjima Plains Camp
South-West of Otjiwarongo: Yakandonga Lodge