We have 7 places to stay in and around Senaru.
Senaru village is pretty much one road and the accommodation is lined along it. Places on the eastern side of the road offer the better views -- some of which can be stunning. All places can arrange trekking, either in-house or by pointing you to an agency that can assist. Some places offer WiFi - if it is essential for you, do check it works before accepting the room.
A blip of a village to the east of Senaru proper, when coming from western Lombok, don’t take the Senaru turnoff, instead continue through Buyan and where the road turns left, with an administrative office on your right and a smaller road goes straight ahead, that’s the turn off to Teres Genit. Just keep going, eventually you’ll reach Rinjani Garden. Yes, they could do with more signs!