Pros:
Good flow
Decent tees
disc store on property
3 Euros for a pay to play is pretty cheap
Most holes are short but the trees offer a decent challenge
Well kept, I can see it might be muddy after a lot of rain but there are boardwalks provided in dampest areas.
Cons:
People with big arms aren't going to care for the length of the holes
It's a bit out of town but a 7 Euro Bolt ride from cruise terminal is not too bad, locals have free transport.
Other Thoughts:
All in all I found it a fun and interesting little course. I'd stop again if I'm ever in Tallinn.