An very unexpected high point of my trip - a surprise gem that appeared when I was looking for a quick overnight stay before flying the next day. If you're on the fence: go ahead and book it!
The Hotel is genuinely fascinating - this is an opportunity to stay in a National Monument *and* National Treasure. I was able to leave my bags in the tea house downstairs as I needed to return my vehicle a few hours before check in, and I also had the opportunity to sit there and have a mean pu'er tea while watching the world go by.
The Green Room is a corner room with two windows looking North and West, so plenty of light and well-ventilated. The furnishings are original, so it's like living in a museum, if the museum was incredibly welcoming and hospitable and had a really comfortable mattress. There's only space for two plugs, which seems to freak people out? But both are used for lamps, so you can use one for a phone if you can get by with just one lamp. I was also nervous about the shared facilities (no need to be, other guests were very considerate, showers and toilets were always available and perfectly clean); about the arrangements for getting in and out (no need to be, both the doormen I met were really nice, helpful about local suggestions, and non-judgemental about people coming back late - it's a hotel, after all) and the vibe (no need to be, it was very welcoming and friendly but without being overbearing, a perfect balance between the personal touches of being in someone's passion project and the anonymity and independence of being in a hotel).
Plus of course you couldn't be better located for everything - much better in the ID than in Downtown. Really this was a very special stay and I would gladly have remained longer than a single night.