My family and I stayed ar Riad Jahan for a week in April of 2011. This was my first trip to Morocco and my family wanted to stay is an authentic Moroccan riad instead of a hotel. I read some pretty good reviews of Riad Jahan and liked what I saw on their website. Additionally, we were a large party (11 in total) and we needed a riad with sufficient availability. We ended up renting the entire riad for the week.
First of all, you need to understand that Marrakech is divided into an old city (where the souk is) and a new city. The new city is well newer. Looks relatively modern with some new, western hotels. The old city is very old, pretty dirty, very crowded and congested and most buildings look almost like adobe. My comments to my family when we pulled up to the riad is that "we better just be stopping for gas". The area is very old and dirty and it does not look like a place where one would vacation. To be fair, there are a lot of other riads in the area, so this is par for the course in Marrakech.
The furnishings are nice though in some areas a bit dated and worn. The pool IS NOT heated and even in the middle of a 100 degree day can be quite cold. The spa is just a small massage room next to the pool and the TV area is relatively small. The rooms are quite small and the A/C works fairly well. Be aware, the middle room has pipe issues and everynight until the next morning it smells like a sewer! Rooms have not TV or clock so you can get a bit lost timewise (not necessarily a bad thing). The tent on the deck is a nice place to catch some ZZZZsss but the deck is a bit dusty. The are a few lounge chairs on the deck and you can definetly cath some sun rays on the deck!
The staff are GREAT!! Very helpful and willing to go all out to please. The morning continental breakfast is a bit light (Moroccan bread which is delicious, yogurt, coffee, OJ, tea and sometimes muffins). They will prepare a traditional Moroccan dinner for you BUT BE AWARE, the cost is ridiculous!!!! You will pay 3-4X LESS if you just walk 5-10 minutes closer to the souk.
Because my family rented the entire riad, quarters were not to close. The riad has five rooms and can therefore be occupied by five different parties at any given time. For a family travelling together renting the entire riad, the accomodations are fine. For different parties not travelling together, the quarters might be a bit too close for comfort.
Overall, I can recommend Riad Jahan marginally. I will be honest in saying that I am a bit of a travel snob (I like four and five star hotels on beaches with spas) but I do feel like you can have an authentic Moroccan riad experience while having a bit of luxury which Riad Jahan does lack. If you stay here avoid Chamber Najma (the middle room) at all cost as it smelss horribly every night! This facility is not child friendly unless you have the entire riad (quarters too close for crying babies or loud children).