Nice place with all the necessary equipment and furnishings for a comfortable self-catering stay. The owner's father Paco lives above the ground floor apartment where we stayed, and he was very hospitable and welcoming, helping us whenever we had any queries. The place is minutes from all the sights of Potes and has a great view of the mountains from the terrace on the garden, although the view from the bedrooms is mostly of houses across the street - but these are very pretty!
Finding the place was a bit tricky. Elena sent instructions but I found these hard to follow with my limited Spanish and Google Translate's version of her messages. The streets are very narrow and reaching the garage is a bit hair-raising if you are in a rented car. Instead, we parked on the N621 just east of the town and walked down Calle la Solana. Their place is about 100m down on the left - look for the big wooden door with their number.
The only things we didn't like were the musty smell, perhaps due to the building's age, and the noise on the last night, when the owner stayed in the room over ours. Footsteps, conversation and TV till 2am sounded very loud through the ceiling and kept us both awake. "Night owls' and heavy sleepers may not find that a problem but it marred a plessant stay and a fabulous week of mountain walking for us. Otherwise this was a great place.