When choosing a location, the light conditions are important. These are optimal if you place the raised bed in a north-south direction. Make sure that no trees or other plants cast a shadow over it and thus steal the light from the plants. The location should also be protected from the wind as much as possible.
To save you a little watering work, I recommend that you set up the bed near a water supply if possible.
Do not place the raised bed on the balcony or terrace directly on the ground. The subsoil partly prevents excess water from draining away, which can lead to waterlogging.
By the way, ideal conditions are offered by a location in the greenhouse, where it is much better protected from the weather than outside.