FWIW, I just took a look at the car online, too. The floors - at least what can be seen in the photos - and the trunk look solid, which is a great starting point. The seat upholstery isn't stock. That isn't good or bad, just an observation. The tach isn't stock either. The carb is also not stock, but is a single sidedraft which might be a very nice upgrade if it was done properly. (I'd like to know what manifold they used.) I also notice the map light sitting in the glove box. Putting it back shouldn't be a huge undertaking, so it is concerning that it hasn't been done. There may be a reason.
Looking at it reminds me of one other thing that hasn't been mentioned: Overdrive transmissions. They are a HUGE improvement if you intend to drive the car on the highway. This car doesn't appear to have one. They can easily be added, although they are increasingly hard to find and expensive. (I think the going rate for a good one - not including installation - is currently around $2,000-2,500, but someone here will correct me if that is off.) Alternatively, you can fit a more modern 5-speed, but that takes a bit more effort and the total cost is probably not much different.
All in all, it shows the kinds of owner-specific changes that many of our cars have acquired over the years. Again, not a bad thing, but it depends a lot on the previous owners' competence. It is definitely worth looking at.
p.s. I should also add something to my earlier comment about buying a hobby. I had next to no knowledge and experience when I bought my SV in 1978. But, I did have the desire to learn. I wish I'd had this club at the same time. The gang here can provide a master class in Alpine repair and maintenance!