I have only one experience but I will extrapolate. In a good location, a rising tide lifts all boats, no matter how unfavorable it was.

• I didn’t mind walk-up to Floor 4. Many buyers get put off right away, but still it appreciated.
• I didn’t mind solar radiation on the top floor. Many buyers mind, but still appreciated.
• I didn’t mind the heat from afternoon sun. It’s an immediate red flag to many buyers, but still it appreciated.
• I didn’t mind a very old building (1974). It’s among the oldest and shows it’s age, but still it appreciated.
• I didn’t mind a small unit, not the most common and popular type. I bought a studio in BGC + #4-116. At least the #4-116 unit appreciated
• The “original” kitchen tiles are an eye-sore, but I didn’t mind and the next buyer simply ignored it, so appreciation unaffected.
• I didn’t mind low floor at #2-1173. I hope it will also appreciate.