We've stayed on Harris several times and at Mol Ban twice. It feels like a beautifully calm, perfectly isolated retreat. No artificial light at night, Skye visible across the Minch, Common Seals in the bay. Well placed to explore Harris, Lewis, the Uists and Berneray. Really good base from which to make the trip to St Kilda. Eat out at the Anchorage, get an exceptionally good takeaway (seafood thermidor) from Croft 36. Try tea overlooking the beach in the garden at Scarista house.
Mo Ban is bright, calm with great facilities and a glorious view - so much so that we tended to spend evenings in, rather than go out. Rare to find a holiday let of such quality that is utterly dog-friendly.
Harris itself is extraordinary - wonderful beaches on the west coast, rocky bays on the east, mountains in the north. Great wildlife. Fascinating history. Some fine galleries - notably the Mission House in Finsbay.