I'm glad to hear that you've straightened out your issues with commons:File:ASTRA_National_Museum_Complex_,_main_entrance_of_the_Open_air_museum,_Sibiu.jpg.  A few days ago I had already put a  tag in that image's licensing description, indicating that permission would be forthcoming.  Assuming Alexandru Olanescu's e-mail referenced the URL of that image and confirmed that he agreed with the license that you attached to that image (i.e. the Free Art License), everything should be OK.  I've taken the liberty of editing the ASTRA National Museum Complex page to show the main entrance of ASTRA museum as the primary thumbnail and moved the photo of the ASTRA palace to the history section.  I also slightly edited the description of commons:File:ASTRA_National_Museum_Complex_,_main_entrance_of_the_Open_air_museum,_Sibiu.jpg on Commons.