Huge house in central location for own use or investment

There are 5 building parts: from the street to the back: 1) beautiful baroque house with 3 floors 2) annex 3) a 1 room apartment, then passage to the garden, 4) janitor's apartment with 2 rooms, 5) a 60 m2 workshop for storage, handicrafts, etc.
The property tax value is given by the tax office as 757000 E.
It would also be suitable as a large single-family house at the front and rental of the rear parts of the building.or completely divide into up to 5 apartments + the two existing apartments.
No. 3 + No. 4 are rented the rest is empty, you can use the living space e.g. for large family and still have closed areas (three entrances, in the non-rented area alone 5 bathrooms)
Electricity was largely renewed 11 years ago, is three-wire, FI, s available, there is only one electricity meter for the whole house, but 5 sub-distributions.

Central location, very large plot possibly further development possible, good bus connection to the center, all stores, pharmacy in the immediate vicinity, a small courtyard with 2 parking spaces in the south, a large courtyard with 4 spaces in the north, a small garden is also available.