I did stay on the New Park Milano. It was very convenient tho a cleaner told me to get the train to Cadorna rather than Centrale (again, 2 stops) and looking at the map I think she's right.
I enjoyed the day very much but coming back I was on a train with no info board n when you're in a station there's no indication of which it is! Suffice to say that the 1st stop, which was almost immediate, I could see a sign in red saying Cadorna so I thought they'd just moved along the track a bit. Turns out that red sign was for the other track, saying where the next train was going
So I didn't get off at the next stop and it didn't stop at all for about 20mins! Fortunately a young lass took pity on me and made sure I was on the right platform for going back. And it didn't cost any more than the ?1.50 cos I hadn't left the station.
I'd to wait a while for the 82 bus then the driver had no idea of the camper place and I ended up having to walk back the way - once I figured out where I was!
I left the camper place in the evening, straight into traffic jams. But to be honest, I think Milan is probably a permanent traffic jam.
So a very long and tiring day, but very interesting.
I'd say, for the normal person, the New Park Milano is a very good option.