I've been staying at Bab, in a standard room, for three weeks as I am in Marrakesh on business. I have found the staff happy and efficient, the management smiling and professional, and the atmosphere of the hotel fun and hip.
The bed is very comfortable, the room and hotel uber-clean, air-con strong, the water pressure excellent and the in-room safe and flatscreen high-def TV working perfectly.
The rooftop bar is a good place for an end of work drink, and the majority of people staying here would look equally at home in London, Paris or NYC.
Unlike some other reviewers, I have not heard loud music in my room (4th floor), although I do keep my patio door closed and the curtains drawn at night.
I can recommend this hotel without hesitation.

My self and a couple of business partners just returned from a trip to Morocco, and while in Marrakech stayed at Hotel Bab (I usually stay at the Murano outside of town, but we went without a reservation and the Murano was full (good for them), they recommended Bab). I now have another favourite place to stay!! The hotel has a fantastic location; walking distance to everything you need, pharmacy, small stores, cafes and bakeries. The staff were very helpful, the place is uber hip and well appointed. The bar is always busy with very good music. I met some of the managers Karim and Pierre and they immediately made us feel welcome.

The dispute between management and workers meant that the hotel was unable to provide breakfast or clean the rooms on two of our four day stay.Money was provided for breakfast to be taken at an alternative hotel which was of a high standard and the manager did offer to find us other accommodation.The workers were camping outside the hotel and constant meetings were seemingly being held to try and resolve the issue.Whilst these circumstances did not unduly worry us as no one was in any hostile but never the less was less than conducive to a stress free stay as we were uncertain that the hotel would actually stay open.Suggest you investigate current situation before booking this hotel.

Arrived to be told by a sour-faced receptionist that we didn't have a reservation, despite me showing her the confirmation email. I was then told that they had new management and a different internet system. My problem? I don't think so. Resisted my instinct to leave and go to another hotel nearby, but unfortunately we stayed. But only for 2 nights of the 7 nights booked: within 1 hour of arriving we had to be moved to another room as the cupboard space in the supposedly deluxe room was tiny, and the impressively huge TV wouldn't switch off. Actually we didn't want it on, but a member of staff came in uninvited, fiddled with controls and then left with the volume blasting out. Eventually we got upgraded to a better room. The evening was OK, trendy bar with suitably cool looking clients but unimpressive bar staff. On day 2 we returned late from dinner to find our breakfast tray still out and the bed unmade, etc. At 10am the next day the tray was still outside our door where I had left it at 1am. Finally, the shower broke and we had first cold water and then no water. At this point we left, with assurances that "next time it will be better". Not for us, as there definitely we won't be going there again. My husband is Moroccan and we're frequent travellers to Marrakesh - this is bottom of my list. It looks good and the website is impressive, but the service, staffing, maintenance and attention to detail just isn't there.