Most post-move surprises don't come from the apartment. They come from the building: slow maintenance, closed amenities, rules nobody explained. All of that is operations, and operations can be verified before you sign.
Start with tickets. A building with an active request channel and visible response times tells you more than any sales tour. Ask how issues are reported, who responds and how long a typical case takes to close.
Then look at amenities: existing is not enough. They must work and be bookable. A gym in the photos is not an available gym. Check real schedules, the state of the spaces and the usage rules.
On Kontyr Leasing you can compare the information each building publishes. Confirm availability, services and conditions with the operator before applying.