Tsuyado are provided as a charity by temples, and should not just be seen as a free alternative to paid lodging. Please leave them as a last resort for pilgrims in trouble; you should not plan your itinerary around tsuyado stays. Read more about them here.
The Tsuyado is underground. After the paying guest you can use the Shukubo's Onsen for free.
You are asked to join the morning service - which is a privilege you definitely don't want to miss, even when it would be voluntary.
There is a coin washing machine.