Timing of when/if to sell STR producing well

[Salvatore D'Agostino]

First time posting. Would gladly welcome feedback. Bought a 6/6.5, 3,600 sq ft home second row ocean facing Feb 2022. It is cash flowing very well. First yr 160k gross (end of May-December) and this year already over 210k gross. Bought for 1 million. Houses same as mine are selling for 1.9+ in one year. Got me thinking, when should I sell? I know some will say keep it forever others would sell. Looking for solid, reasonable wisdom on when/if to sell. Appreciate the feedback. 

[Nathan Gesner]

Quote from @Salvatore D'Agostino:

In my mind, it's a very simple answer: you sell when you can invest the money into something that produces a greater return or moves you closer to your goal.

The reason you can't decide what to do is because you haven't set goals for yourself.