We loved our time at Glamis Cottage in Blackheath. Glamis is a charming, older style cottage, but with a beautifully renovated interior to make it super comfortable. It's only a 3 minute walk from the cottage to all the cafes and restaurants of Blackheath, meaning we made the most of all that this charming town has to offer.
Importantly, it has all the facilities you need: a well stocked kitchen, good warm bedding and excellent heating throughout (it was around 1 degree for much of our stay).
We only stayed for two nights over a weekend, but would love to come back for a longer stay to make the most of all that the mountains, and this cottage offer.