Two weeks ago we had dinner at Wisteria Restaurant which is located at Galata/İstanbul for an after-wedding party.
Place was built as a church in 1868 , then converted to a French school ,finally used as an auto-repair place.
Luckly, in 2010 it was renovated for touristic purpose.
Both interior and the garden design & decorations are very successful. Dinner was also delightful.There was also live music performance.
I strongly suggest you to visit the place , have a drink or eather lunch while you are hanging around Galata.