Plan for the filled weight
Water, glass, substrate, and hardscape make an aquarium much heavier than it looks empty. Use a stand designed for the tank and a level surface.
Place it near a safe electrical outlet with drip loops and enough space to reach the filter and perform water changes.
Avoid unstable conditions
Direct sunlight can increase heat and algae, while vents and drafty windows can shift temperature. Choose a location with steady room conditions.
Make sure the tank can be observed without frequent bumping or vibration. A convenient location makes regular care more likely.
For your own tank
Check that you can reach the filter, outlet, and water surface without moving the aquarium. A full tank should not be shifted to solve a placement problem. Confirm stand support and electrical safety before filling it.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.