Glad your friend is thinking of moving to a ground floor flat. His home should be assessed by social services and equipment he needs delivered and fitted before he goes into hospital. Mine included extra steps at front and back doors, a bath step and stool, bath handles, and a loo frame, I was issued a commode but it wasn't really necessary. They also look at your bedroom and kitchen and suggest any adjustments to help you cope.
The hospital physios should have plenty of advice for after he's home. I had a practice to see whether I'd manage all right in a kitchen. He must make it clear that he'll need some support as he lives alone and keep on asking whether he has a care plan. Hip surgery patients tend to stay in hospital a very short time, if everything goes smoothly only a couple of days.
I feel strongly about this as the two people who were going to support me after TKR both were unable to do so (emergency surgery and MH issues). I explained, everything was noted and I said several times I was concerned that I had no support or care plan. Also we asked but there was no suitable nursing home or hotel in my area. The day I was told I was ready for discharge I spoke to the very competent sister on duty. Within 15 minutes she discovered that nothing had been done because 'someone didn't speak to someone else'!! The result was I bedblocked, to my embarrassment, for a further week.
Finally I was home with a morning and evening 30 minute carer. It was good to be checked and have help with the elastic stockings. I only needed her for a few days.
The district nurse came a few times to check BP and wound and got a traytrolley delivered when I said I was going to buy one.
I hope all goes well for your friend. Age seems less of a factor in recovery than mobility and general fitness.
Things you learn from Watching TV (light hearted)
Have you stopped buying papers?
I didn't want to do that again!