As a ship that was built for acoustic research, Akademik Ioffe is a very quiet vessel that doesn't disturb wildlife, is VERY stable in rough seas, and has an excellent Russian crew who are friendly and helpful, if you speak to them.
Was in one of the cheapest cabins and there is an "open cabin" policy which is no problem. The cabin was fine. Altogether it felt like a proper ship with plentiful good food, a cosy bar, and access to the bridge for much of the day. Lots of deck access on different levels. Zodiac access was easy.
And most important last. The expedition staff couldn't have been more friendly, welcoming and informative. On the crossing of the Drake Passage there were excellent lectures and the expedition leader did a brilliant job choosing excursions and doing everything possible to satisfy client requests.