Our plan is to spend about 4/5 days in an apartment in each of the cities (including a day trip from Helsinki to Talinn).
At this stage we are not considering hiring a car or driving anywhere, but are quite happy to take trains to visit areas out of the capital cities.
We are very fit 50 & 60 year olds and are more than comfortable navigating cities by bike, on foot or using public transport.
Firstly, I am keen to know whether we have about the right amount of time in each city - we enjoy visiting local museums, good local food and wine, general places of interest.
Secondly, if anyone can suggest a rough itinerary - it would be much appreciated!