This mosque is famous for kitten , lovely atmosphere .. but I should note that this mosque's Imam is one of the best he reads in Arabic during prayer with a beautiful voice and well spoken language
Recommended place to have prayer away from main mosques in Istanbul
Aziz Mahmud Hudai Mosque & Dervish Lodge was built in the name of Hudayi Effendi in 1594 in the form of complex included work house,mausoleum,library, fountain,dervish cells and Turkish bath..
Is it possible that you make some photos of cats in the mosque and upload it here?