We visited the Olasiti Lodge twice on our 11night/12 day Safari.
The first visit was en-route between locations for a rest and lunch stop. A very nice buffet lunch was served on the outdoor patio area. The pool area was available to us for rest—there are changing/restrooms adjacent to the pool. There were also lounges & tables/chairs in the pool area. The food was tasty, properly cooked, and there was reasonable variety. Desserts were excellent.
Our second visit was as a day room waiting for our evening outbound flight. We had a very nice room with two beds; large bath and balcony, located in a two-story block of about 10 rooms adjacent to the central lobby/dining etc.. The room would have been more than acceptable as an overnight accommodation.
The property is in an unusual location a moderate distance from the center of town, and we did not notice anything of interest in the immediate area (i.e. walkable distance). The area surrounding the property is typical of what we saw in Arusha in general—i.e. poor, underdeveloped, dusty. However, the property is gated and once past the guard at the gate, it is a whole different world. The grounds are clean, lush with vegetation and well manicured.
The lobby is very large with comfortable furniture on one end for lounging. There is also bar in the lobby and a gift shop off to one side. The gift shop as a small selection of items we saw elsewhere, plus a few unique items. Internet is available for $10 USD for 30 minutes, but it is VERY slow.
Would not hesitate to use this property again as a day room, and would also use for overnight on arrival or departure from Arusha.