Hotel recommendations

Hello! My partner and I will be visiting your lovely city at the end of July. I have visited Würzburg before but this will be the first time with our 7-year old child (this is also their first visit to Germany).

Are there any hotels you would recommend? Looking for something:

*Walkable from Hauptbahnhof (or short tram ride)
*Suitable for families/kids
*Has decent breakfast
*Less than 150 Euro per night

We are open to staying at a chain hotel (Motel One, Ibis, etc) as we plan to visit a few other German cities on our trip and our kid tends to function better when they are familiar with the accommodation, if that makes sense. Thank you!