I recently stayed at Fidan Suites Taksim and I was very pleased with the service.
The room is exactly as pictured. It is spacious, and convenient with immediacy to any necessities a traveler would need. The room remains is immaculate, with towels and linens swapped regularly. The building itself is dated, but well-maintained in good conditions.
The staff are all darlings, whom were helpful and accommodating to a fault- especially Mr. Ozgur. We ran into minor blunders, but he promptly attended to our concerns.
I recommend Fidan Suites.