It's easy to forget this but an interview is a two way street! They're interviewing you but you should be interviewing them as well. Sometimes out of desperation or urgent need a person will jump at the first offer only to realize very shortly that it's not a good fit at all. Before I took my current job I had an interview like that. The guy doing the interview was a half hour late, no one could find him. When I did finally talk to him the job on offer was nothing like the one advertised. I should have walked out and prevented him from wasting another hour of my time but I opted for politeness.
The point of my longwinded story is that you'd probably be miserable if you took the job! Hang in there for something that's a better fit.
