We stayed at Pyrgos Stone House - Upper and our relatives stayed at Moustafa Stone House. This review is for Upper studio at Pyrgos Stone House. Triantafyllos is a great host -- he is very helpful, sweet, warm and kind; well known and respected on the island.
The upper studio is comfortable despite the lack of air conditioning. On hot days, ask for a fan, leave the window and balcony door open and it will be comfortable. The decor is minimalist traditional and the bed is located on a loft platform. There is no railing, so not suitable for younger children. There is plentiful storage in the studio -- closet with hangers, storage for your luggage under the loft platform and large chest of drawers. There are 2 traditional settees. There is a view of the sea from the window and the small balcony where one can take one's breakfast. Note lack of WiFi might be a problem for some; Triantafyllos says village was expecting to be set up sometime this Summer.
The studio is very convenient to one of the 2 parking lots in the village -- right on the edge at the start of the village. Keep in mind there are quite a few stairs so not good if mobility is an issue. Be advised that it's a shared kitchen, large space with table with 4 chairs, regular sized refrigerator, cook top, well stocked to cook simple meals. Water pressure in the kitchen sink is very weak. The clothes drying rack outside in the small atrium is shared also with unit downstairs. Sun reaches the atrium so no problems to dry the laundry. There is also washing machine in the kitchen. Check out the stars from the atrium in the night -- lovely.
There are no shops in this semi abandoned village, so you'll need transportation to go to Mandraki (about 18 minutes drive) to shop for your bottled water and other essentials. There are 2 tavernas in the plateia (square) -- Apyria (owned by Triantafyllos and siblings) and Balcony. Balcony opens early so you can get breakfast there with a view to the volcano crater. There is also bar/cafe Aposperi which only opened from 18:00 when we were there in July -- serves cocktails and mezes (we didn't eat there, only had drinks). Both Apyria and Balcony have very good food. We chose to eat most of our dinners at Apyria -- Triantafyllos' sister and brother are the cooks. Tables take over the square in the evening, just lovely to sit under the open skies and dine on delicious food. Triantafyllos et al have a farm which provides produce for the taverna.
Be sure to check out the natural sauna in the "cave" located right below Aposperi. While we were there in July, the village had a lovely breeze on most days. Emporios is quiet, peaceful and most places were within 15 minutes' drive. Our favourite beach was Lies -- vibe of Greece in bygone days. Nisyros is beautiful and magical!