My family and I had a wonderful stay at Gonul's. My mother and sister arrived on a different flight and couldn't find the place, so Gonul helped them to get hold of us. We also arrived slightly earlier than expected, so we were given coffee and dessert while some final tidying was done- a lovely touch! During our stay we met many of the local cats - you should definitely befriend them, they're one of Istanbul's top charms. The location was perfect, just around the corner from top attraction. The only potential thing to watch out for is the stairs, which are vertiginous and may not be suitable for older people. Overall our stay was perfect, though. Thanks Gonul!