Prior to our trip, Margarita had been in touch to make all the necessary arrangements and there was a taxi waiting for us at the port (the only taxi driver on the island - a lovely guy who we got to know a bit more during our stay).
After 15 minutes we arrived at Agali and were greeted by Dennis and shown to our room. Margarita and Dennis run a cafe on the ground floor, one apartment above it on the first floor, and then this apartment at the top. This apartment has a more private entrance via stairs; I think you have to come and go through the cafe for the first floor apartment.
The apartment is nicely done - two balconies, one in the kitchen/lounge, one in the bedroom. Air con in both rooms. Light and spacious with views on the beach.
A simple breakfast in the cafe is included - toast, biscuits and a really good coffee of your choice. The cafe's a lovely spot so we felt lucky.
The apartment is right opposite the bus stop too and you have the advantage of being able to see the bus at the top of the hill, giving you a 5 minute warning! Buses to Chora are useful - we tended to get one in (€2) and then book a taxi home (€10).
If you want plenty of nightlife and choice on your doorstep, Agali is not the right place to stay. It has just enough - a few family run restaurants, places to grab water and an ice cream. But it's all about the choice of beaches, swimming and relaxing.
In Chora we recommend Rakentia wine bar at sunset and Blue Cuisine for high end food, but there are plenty of other options too.
Folegandros itself is beautiful and very dramatic. It's quiet - a world away from Santorini and Mykonos. I'd recommend staying for at least a few days as it really grows on you.
Finally, Margarita and Dennis are the perfect hosts. They're very welcoming, chatty and helpful but also allow you privacy.