Can be this relay and more precisely SIL03-1A72-71D variant controlled directly from RPi?
The data sheet specifies coil resistance of 500 Ohm which at 3.3 V voltage gives 6.6 mA control current, which is well within 16 mA limit.
Am I correct?
From the datasheet I come to the same conclusion. It should work. Driving this relay from digital logic interface seems to be the intended use case.
I am however not clear if the flyback diode is included for this particular model or if it is optionally. If it is not allready include you must provide it externally otherwise damaging the GPIO pin is indeed a real danger.