Asu’s Place is a lovely stylish apartment. Don’t be put off by the access, it is lovely inside with a quiet balcony All amenities, even a washing machine ( which we didn’t use) and very comfy bed. Little notes on cupboards made things easy to find.
Though Asu’s signage to find correct building was good, Google maps a bit confusing , maybe look for Marmara hotel first, then CVK Bosphorus Park Hotel. It’s not far from there. But be warned it’s a steep street. Worth it when you get there!