Love your greenhouse and all your wonderful features! How pretty it looks against the backdrop against the lake. I agree about the sink. It is one of the handiest things to have inside the greenhouse. Though mine is not fancy like yours, just a laundry sink hooked to the garden hose that I turn on when I need it, it serves it's purpose. And real electricity! Wow! You are a lucky gal!
This is the time of year when part of the plants are already out and others are begging for permanent fresh air. And I can't wait to get the plants out and give the gh a good cleaning inside and out.