Director of The Fairtrade Foundation recommends Satemwa

and Lujeri Tea Estates in an interview with guardian.co.uk:

My favourite hotels are…

Locally run guesthouses. I stay in many around the world, but recently I was in the tea estates of Malawi and stayed at the Satemwa Guesthouse in Thyolo (00 265 1473 256; satemwa.com) and Lujeri Lodge (00 265 8 854 894). It was so beautiful just sitting out on the veranda of these old planters’ houses looking across to Mount Mulanje with the red earth of the land against the vivid green of the tea fields. The guesthouses are almost from another era – basic, but meet all your needs and are quite romantic, with cool marble floors, fans on the ceiling and large beds with mosquito nets.

Source:
Me and my travels: Harriet Lamb, Director of The Fairtrade Foundation | Travel | The Observer