How could a white cuckold charge rent to his wife's lover, especially since we usually begged both of them to cuckold us? I can see the logic in having a spare bedroom ready in case her lover visits. But by entering the house, the lover becomes the 'man of the house', and the man of the house spends his night with the woman of the house in the master bedroom. This is what the cuckold implicitly communicates to the lover by inviting him to take the husbands place in the marital bed!
The spare bedroom should be set up for the husband, with his clothes so that he has no reason to disturb the couple in the morning unless invited. The master bedroom ought to be reserved for wife and Black lover exclusively whenever the lover is in the house.
A more interesting idea than having a room set up for his wife's lover is to ******* the husband to offer him space in his dresser as well as part of his closet space! That dovetails nicely with the spare bedroom being for the husband, and gives the Black lover extra clothes when needed. Additionally, seeing the clothes of his wife's lover in his personal space is a daily reminder of the presence of this Alpha male.