A good question.
A local answer.

Read recent reviews for noise, lift access and the actual room facilities. A property-wide amenities list may not describe the room being offered.

Ask hotels for written confirmation of the exact room or private terrace view and how many guests may enter. A harbour-facing listing does not guarantee fireworks visibility.

Collect the car after the city stay and check hotel parking and the airport return route. A train to Katoomba is another option if driving is only for one day.

Check laundry, kitchen access and cancellation terms, since the length of the hospital visit may change. A slightly longer bus ride can widen the options.

Map the walk from the exact hotel entrance to the station and an evening meal. For an eight-day stay, room size and laundry may matter more than a spa.

Book a flexible room early and plan the return route after midnight. Road closures and crowded stations can make a convenient base more useful than a distant 'view' hotel.

Use the station entrance and evening walking route on a map before booking. For a short stay, a reliable location and flexible cancellation are valuable.

Consider a short stay near Darling Harbour or Surry Hills if evening dining is the priority. Check recent noise reviews before trading quiet for activity.

Map both properties to the outings you will repeat. Pitt Street may suit CBD shopping while Sussex Street may feel closer to Darling Harbour activities.

For several weeks, groceries, laundry and a comfortable room matter as much as the first day's attractions. Check the street and room noise before booking.

Compare the exact room category and current inclusions at both hotels. Breakfast, lounge access and harbour-facing views can change the value considerably.

Compare the walk to rail or ferry with the space you gain. A slightly less central apartment can be worthwhile if the family has room to unwind.