If you are looking for a secluded and scenic mountain retreat with the most welcoming hosts, you have found it! The views are amazing, and Steve and Nancy are delightful retirees who enjoy hosting their guests. We loved staying in the guesthouse, which has a kitchen, small bathroom and a kingsize bed downstairs (kind of a studio), and going up the spiral staircase you will find two single beds in the loft. The main kitchen (bbq and stove) is outdoors behind the guesthouse, which is fine as long as it doesn' t rain too hard....
The main feature, however, is the balcony overlooking the valley. You will spend most of your time there, in particular as the hot tub in the cold evening hours is just wonderful.
Speaking of location: you are in the mountains, and the evenings are cold! Our first night was unexpectedly cold, and we wished for warmer PJs and duvets....Also, unless you enjoy steep, curvy and unlit mountain roads, you might want to plan to return to your place during daylight (ie before 6 pm).
Tip to finding the place (and yes, you do need a car, and a 4x4 is definitely preferred!): the turn-off is on the road between Cartago and Paraiso, Rt #10. At the end of Cartago, you will pass a Walmart and a big McDonalds sign. About 2 km further, you will pass a Delta gas station (all on Rt #10). After that gas station, you will see a big poster sign for Lankester Gardens to the right - that's your turn-off. You then basically follow that paved road past a small group of houses, past a high walled, barbed-wired compound, past the garbage depot, all the way straight with all the ups and downs, until the road makes a sharp 90 degree right turn (about 3 km into it). There, you continue straight onto a dirt road. You might see the sign for Casa Bartzis - you are on the right track. Do not leave the dirt road until you see on the left side the sign "Riley" - you have arrived! Enjoy!
P.S.: My Google Map recognized the location as "Paradise Peak".