The middle floor is often cooler/better naturally insulated.
Top floor usually ask a premium except when you have flight path problems...then AVOID.
Bottom floor are security risks(unless elevated ~ eg if parking is bottom floor). Courtyards attract a premium because people see lifestyle...despite them being "spit" "Rubbish collectors" etc, buyers will still scramble over them.
Bottom floor apartments in good areas are attractive to the elderly and less mobile.(no stairs).
Thats how I see it.
Best apartment blocks are those art deco jobs IMO. but hard to find ones with parking and outdoor areas(such as a good balcony). And they seem to attract a premium already.(enough people are on to them as good solid buys).
Many 70s jobs suffer from noise.(poor sound proofing).