I'm going to say it again, because it is so important.
doesn;t matter that it is small
doesn't matter if mn posters think it is cramped
doesn't matter if it needs doing up/decorating
doesn't matter if there is no garden or parking etc etc.
doesn't matter if it is a less brilliant area.
The only thing that matters is if he can resell it in 5 years (or possibly rent it out)
location is everything. Don't go for new builds, they don;t resell as well. Go for a small house/flat in an area where the houses regualrly sell, and for at least as much as they sold for last time, preferably more. Really rough areas do not have resale value.
location (or rather resaleability due to location) is everything.