I really enjoyed my stay at the Diamond Light Retreat. The rooms were well-heated and very clean. Everything was very clean and nice actually, and all the electronics worked. The place has clearly been renovated recently, and the internet connection was stable. I spent most of my time working in the Ruby Room, which was quiet and cozy.
The landlady seems very nice, and easy to deal with. She had a client in one of the far rooms but I wouldn't have noticed if she hadn't told me.
The bath was excellent, as well! very nice to stay in a place with a proper bath.