Question Affordable Family-Friendly Hotels in Berlin?

We're planning our third trip to Berlin this summer and this time we're bringing our young adult son along. We're looking for budget-friendly hotel options that are family-friendly and well-located for exploring the city. We’ve been before, so we’re familiar with the main attractions, but we’d love to find a place that’s comfortable, clean, and won’t break the bank. Any recommendations for areas to stay or specific hotels that worked well for your family? Also, any tips on booking deals during late June/early July would be great!