Had a bad experience once with private apartment in Prague and put me right off, especially arriving late. Prefer to be right in the middle of it really. Ideally I want a Savoy standard hotel for Travelodge prices :-)
£85 a night. ;-)
Owners of the apartment have replied to all my messages and answered all my questions. Excellent customer reviews.
Right in the centre of Istanbul not far from Taksim Square.