Overall we had a nice stay at Ming's place. It was as pictured, with beautiful lake views and plenty of room for our 3 adults and 2 kids. Ming was very accommodating and responsive.
Location was perfect to explore throughout Seattle and beyond. About 20 min to downtown and during the summer you are just a few minutes drive to several lake beaches. Wifi was fast and kitchen had the basics (ok for breakfast and lunch but could be lacking for cooking a full dinner).
My two complaints would be that the place could use some upgrades to make it feel a little cleaner/fresher - the towels were pretty threadbare and the carpets were really stained, for example. And second, you are really at the mercy of upstairs renters in terms of noise. First two nights we had no problem but last two nights we had to have Ming reach out to ask them to be quieter (2 different groups). He was very responsive and both times the issue got resolved, but it's just something to be ready for if renting. Personally, I'd probably opt to rent the upper unit if we were to return.
For those with kids, just a note the outside yard is not maintained. I was hoping the yard would be place they could play a bit, but it wasn't.