There are much better boutique hotels in Helsinki.
The buildings are beautiful with lots of history, but this didn't carry into our superior plus room, which was white and gray drywall, and small to boot. The furniture was spare and there was nothing to unpack into. The toilet/shower was very small and without even a shower curtain, so we had to move toilet paper and towels out before showering. Description called for a bed for a couple and I even specially requested that, but it was just two beds pushed together, and it's a bit of a romance killer to fall between the beds while in action.
There are much better options in town for a staycation in this price range. I don't recommend paying extra for a room update, you get a bed anyway, and the shower/toilet can't be smaller.
The hotel sauna was okay, but it sorely misses a terrace to cool in - who builds saunas in 2020s without a nice relaxation area?
I really liked the breakfast, although it wasn't as good as similarly priced hotels downtown. My wife wasn't happy with porridge being the only warm thing in breakfast. Sadly the restaurant isn't open the whole week, so we didn't get to test that.
They should adjust their prices to be closer to their spartan offering. Ten euros more per night gets you at Lilla Roberts, and we should have gone there again rather than rest the new one.