I am with the U.S. Institute of Peace, and am looking for any security information from those operating or who have operated in Mariupol. Hotels used, transportation issues/advice, and any insight into the current situation there would be very helpful. Please feel free to reach out to me at email@example.com. Thank you for your time.
The OSCE Special Monitoring Mission to Ukraine have had a hub in the city for nearly two years and they are living in hotels along the beach front.
There are no real security issues in the city, however there is alot of military presence and it is close to the contact line.
Getting there is by train, bus or car from Dnipro or Zaporizhia.
You can get a flight from Kyiv to Dnipro and there are some international airlines fly direct into Dnipro.
There are several aid agencies also working in Mariupol.
Hope that helps