I can't say enough good things. Not only was the Nana waiting to greet us and show us where the place was, but she also had stocked the place with some fresh local pastries and champagne as she knew we were on our honeymoon. The place itself was also 10/10, so cute, clean, spacious and just like the pictures! I would strongly recommend this spot!

Some tips for first time Santorini visitors like us:
We stayed in a hotel on the caldera edge in Oia for the first leg of our stay for over 2x the cost per night. There's very little privacy along the caldera, and the room wasn't even close to as nice or spacious as Nana's spot. If we had it to do over we'd have stayed with Nana the entire time instead!

We ended up renting an ATV down the street from Nana's for 35 euro/day, and would strongly recommend doing that for getting to and from Fira—the walk is about 20-30 minutes, and cabs are expensive and rare. Trust me, you'll want one for exploring the island anyway, as there is sooo much more to see outside of Fira! Nana's place is pretty much in the center of the island, so everywhere is less than a 20 minute (and very fun) ATV ride away!