Had a great experience at Movenpick Karachi. Service is top notch all around - from bell service to servers at the dining area. Breakfast selections were amazing, including halwa poori everyday, and they will make fresh tea of your liking upon request. Hi tea on Fri/ Sat/ Sun is super for the price. They also have a complimentary chocolate hour where you can indulge in some fine chocolates in the evening. Spa/ gym area was very nice and the outdoor pool looked very clean (although I didn't try either). The staff was also very courteous - they'll help carry your bag to your room or to the car (super five stars for them)! Daily cleaning was to perfection as well.
Only downside was you have to request an iron every time and place it outside when you're done. Room service was prompt, but the only downside was when I ordered a dinner item and tea, I suppose they started making tea at the same time and it got done earlier and was delivered lukewarm. Apart from these minor incidents, the stay was perfect!
Shopping at Clifton or Sadr is just within 15 mins and there's always cabs nearby that can be requested. Highly recommended for their service and ideal location.