The biggest problem with being a tourist in Finland is that even in the capital very close to everything is in Finnish only. This includes descriptive texts in museums. You may as well not bother with most attractions.
Interesting article I've read while observing this: "It's impossible to make money running hotels in Helsinki".
To be blunt: If Helsinki wants more tourists it needs to make them want to return. This starts with making tourist attractions relevant to non-Finnsh speaking people. If they don't want more tourists they should close down hotels rather than moan about a lack of guests.
Everyting else is, it has to be said, is amazing.