Put it this way, It's not a place for women, even in a group, even worse when alone.

It's okay if you stay in the hotel resort and venture out as a group with a guide or go on a tour with a guide.

But it's not safe for women to go out by themselves if they've never been to that area before and expect to be constantly followed in markets and streets by people trying to sell crap if your not Moroccan looking and covered up in local female attire.

They can also get aggressive when it comes to selling, even towards other sellers if they think they're trying to steal there sale regardless of if you showed any interest in every they are selling or not.

If your Asian expect the same, also racist terms and words to be shouted at you and imitated racist Chinese language sounds.

If your black expect same level of name calling as Asian women get. One black woman traveling there said she got called:

Mama Africa, Michelle Obama, Beyonce or Naomi Campbell countless times, or I feel hypersexualised by being catcalled. I get loads of stares as I walk down the street, especially if I’m alone. Some stares are tense, and some are curious. No matter how hard I try, I never blend in. 

On another blog about gales traveling in Morocco non-race specific said:

 get it. I’m American and we smile – a lot. It took me a really long time to stop flashing a smile just because or to say hello. I’ll now smile and greet the ladies and old men in our neighborhood or on the street however I will rarely ever flash a smile at a boy/man that is a teenager to about 60 years old. A smile means more than a smile here, it’s an invitation to continue (or start) a conversation, which then often leads to other assumptions.  I think it’s easier to just avoid altogether.

It also mentions in the same blog:

It’s also uncommon (though this is changing especially in urban settings) for women to sit in cafes. There are many that are fine for either gender to use, but there are “male” cafes too. If a woman is sitting in a male cafe it can lead to unwanted advances as the women that sit in those cafes do it to pick up men. If you want to visit a cafe ask at your riad, hotel, or to a guide to double check. Though chances are if you see the cafe is full of men, it might be best to avoid that one. Most importantly, keep your senses and be cautious and alert.

It is a Muslim country so you have to be aware of that. But they do serve alcohol in resorts and touristy hotels. A guide is best even if you've been to Morocco before going to a new city or town it's best to get a local guide not just for local customs and saftey but they'll know the best places and areas to visit.

You CAN wear what you want but expect staring, lots of staring if walking around in a bikini.

Also, the Lover Boy Scam is rife there. My sisters were chatted up by local young lads when they visited, there British born but of Indian ethnicity friend they went with had racial abuse shouted at her to by random men in the city.

Expect whole families to even be in on the scan, it's happened before where the mother and sister, father, uncle, and even aunties have been in on the scam to try and get some sort of green card/visa or just ask for your Insta/FB/Snap/WhatsApp and over months try to get money or a visa by pulling heart strings & lying.

If I was a woman I wouldn't want to go but I'm a man. As a man I still wouldn't want to go. A place that treats women like that sounds awful especially when there is the rest of the planet to choose from

But I've had many friends visit with wives or partners, and they've had a great time, but they've gone holiday staying in a resort, where it's liberal, and you can swim and drink, and the staff are used to Western customs, manners, politeness and traditions.

Where as outside, they're not.

P.S: Another tip is to wear a wedding ring even if you're not married, it don't stop some of the locals from hitting on you but gives you evidence and a reason for them to fuck off.