I will use the opportunity of a stay in Tallinn at the end of May to hop for 48 hours to Helsinki.
The trip will be "Hilton Tallinn Park" → (this is the moment I would like to store the luggage) → ferry (Eckerö-Line) → Helsinki → ferry (Tallink) → airport
Ideally, I would like to store a suitcase at the ferry place, to pick it up on the way back (assuming I arrive at the same place, which is not yet clear from the reservations). But anything reasonably on the way would be great as well.
Is such an arrangement possible (= reasonably doable)?