Chemka Hot Springs is a unique place. Probably the only place in Tanzania (and most likely in the whole East Africa), where the groundwater actively interacted with geo thermal sources, forming a number of small lakes with warm, never-stagnating water. Its purity is not inferior to the best Dominican or Maldivian resorts.
Soak in the naturally heated Chemka Hot Springs. Swim in a beautiful site in the forest and enjoy an included picnic lunch before returning to the city.