Real Estate / Real Estate Help - Private Rental of Apartment in Poland / Obtaining Deeds [6]

I am seeking some assistance in obtaining details regarding a private rental flat in Poland.

I have personal legal links to the flat, however, I am struggling to obtain the details required. My spouse has apparently purchased an apartment and has rented it out for several years without declaring any details to me:

Is any of the information below in the public domain?

Estimated Value
Copy of Documentation covering the Legal Owner - is there a website for this?
Rental value / rent being paid
Details of current and previous tenants
Length of tenancy

Am I able to register an interest in the property?

I do not have the property reference at present however I have the full address.