Ignore the Saudi "stars" system. Although the Dar Al Nadwa is supposedly 4 star it is really only a 3-star hotel. The bathrooms are really small and 1/2 of the triple rooms are double with a 3rd bed thrown in and no room to swing a cat.
Indeed rooms x01-x04 are alot bigger than x05-x07 on the opposite side of the corridor.

That being said, the rooms are clean.

The best thing going for the hotel is the location - it is directly behind the Hilton Towers and near to the Haram-Sharif.

In conclusion - clean, reasonable quality hotel in good location relative to the Haram-sharif.

If you want a better hotel [which is nearer] I would suggest the Firdous Makkah; if you want a nearer&cheaper hotel then try the 2* Zahret Makkah