We are a young couple and this was our first cruise visiting Stockholm, Helsinki, St Petersburg, Tallin, Riga, Klaipedia, Gydnia and Warnemunder (Bornholm cancelled).
Overall we had very good impressions of the cruise. We mainly used the ship as a floating hotel and made the most of our days in our ports of call. We did hear people complain about the quality of the ship and service with Costa, however these were always people that had been on several cruises previously. We had nothing to compare Costa with so we loved it.
Here are our top tips:
Small but comfortable. We would reccommend that you get an interior cabin if you don't plan on spending hours in there. There was loads of cupboard space and the bathroom is roomy.Note: the hairdyer is rubbish.