This was Tauck's small ship cruise starting in Stockholm, then going to Helsinki, St. Petersburg, Tallinn and Copenhagen. Very well organized, experienced English-speaking guides, flexible in the case of less able-bodied passengers and smart about things like getting us into the Hermitage early to avoid the crowds. Only negative was that a different company (Ponant) owns & operates the boat, and only half the 250+ passengers were with the Tauck group. The boat has a small auditorium for lectures by vacationing professors on history & culture, in both French and English. Overall minimal complaints (like the door keys to our rooms being inactivated at midnight before we left and having to call somebody to get into them after breakfast) and the destinations were great. Just enough free time, with good advice on shopping (Tallinn! Tallinn!) and well-guided shore tours. The off-boat activities were all included in the overall price, so no dithering about whether the "singing revolution" part of the tour would be worth it.
Not as small as expected, clean with a charming steward who was always there when needed.