Accommodation question for UK family visit visa?

As long as he has enough funds to fund his trip and you are not sponsoring him financially, it shouldn't matter and no you don't have to provide any details other than the address of where he will be staying.

If he were applying for a spouse visa, then you would almost certainly not be able to sponsor him if you are receiving any benefits and you would have to provide details of the number and size of rooms and the landlord's permission for him to live there with you.

I hope he can prove strong ties to his own country when he applies for his visa as with a wife in the UK he is an overstay risk otherwise.

you may handle this question to the united kingdom domicile workplace. that's a complicated concern and you may get deceptive information here. the domicile workplace provide you precise information and suggestion.