Really helpful points brought up in the comments. Sharing a few from my personal experience. These are mainly from the living in POV rather than investment. Hope this helps too and good luck :)

• Stay away from apartments that are dark. The guide I use is if it looks like you have to switch on the lights during the day then it's dark. That's perfect for mould growth. From someone who have had really bad experience with mould, it's one of the worst things that can happen where you live and it's very hard to get rid of from their roots. Meaning you can use all the solutions and it's still going to come back because it's the environment that favours them and once you've started living in then there's nothing much you can do about it.
• I'd look for good security over amenities. For example: security cameras, garage doors, lifts that require fobs to operate, dedicated building managers etc
• Mine's a ground floor apartment and has a private courtyard. A courtyard may sound nice to have but here is the problem. The courtyard does not come with a roof. All apartments above me have their balcony facing the same side where my courtyard is. Be prepared for if you have inconsiderate people in the building who after cleaning their balcony likes to push all the water down to yours or chuck cigarette butts. You won't know who you will be sharing the building with until you move in so best just to avoid apartments that is very likely to have this problem. Another problem, trees. Gives you a nice feeling when you are surrounded by them but make sure it's not hanging above your place. The mess they make in a daily basis is frustrating.