Buses from Bajawa (7 hr, Rp 80,000) start at 6AM. Gunung Mas runs 12-seater "Travel Bus" from Ruteng to Moni (continuing to Maumere) at 7AM and 1.30~2.PM. It takes 10 hr from Ruteng to Moni (6 hours from Bajawa) and they will pick up from hotels by prior arrangement.
From Ende there are more options. Public cars (2 hr, Rp 40,000), Toyota Kijang are the normally the most comfortable option. Bemos (Rp 20,000) and buses (Rp 30,000) also ply the route in 2.5 hr. If you're feeling adventurous ojeks will take you there for Rp 100,000 letting you make your way in your own pace and stop for photos along the very scenic route.
From Maumere (3-4 hr) there is the same plethora of buses (Rp 30,000) and public cars (Rp 60,000), just ask at your hotel.
From Riung, the public bus to Ende (50 000) leaves at 6am and you can catch a bus to Moni from there.
The ubiquitous ojek is never far away. Depending on your guesthouse's proximity to the national park, ojeks are between Rp 25,000-35,000 (1 way) for a ride up to see the sunrise at 4:30AM. It's best to walk back since it's a nice walk, and there's nothing worse than having an eager ojek driver pulling at you to leave the beautiful lakes just as the light is getting perfect for that magical moment.
You can rent a motorbike at many places around town for 100 000 for the day.
Mount Kelimutu. The main attraction. Beautiful at sunrise, the 3 mineral lakes at the top (in the craters) change colour with the changing light of the morning. The lakes change color completely from time to time. In the national park you can see a table of what color the lakes were for each year going back 20 years. Rp 20,000 entrance fee and 50,000 camera fee which isn't regularly charged. Rp 3000 for motorbike parking Edit Nov 2014 : The entrance fee is now 150000 which is a complete rip off. There is another way to go around the checkpoint but must take 2-3 hours. Check on OSMAndroid or Open street source map to see it.edit
Monkeys. On your way down the volcano you will find the monkeys have awoken. There is an official feeding ground where you can go and feed the monkeys. Be careful, they are sneaky buggers, and there's always a risk when interacting with wild animals.edit
Local Villages. . The settlement itself is surrounded by spectacular scenery, landscapes dotted with palms and banana trees. There are also a number of visible burial sites in front gardens, a local cultural tradition.edit
Hot springs. Near the entrance to the Kelimutu National Park you find the hot springs. A perfect end to an early morning.edit
Waterfalls. Opposite Rainbow Cafe, a small path leads down to a roaring waterfall. Popular with the young locals, this is considered the perfect site for a picnic.edit
Not far from Moni (about 5 km in the Ende direction), the big fruit and vegetable market is where the villagers sell the produce from their gardens. Everything is fresh, tasty and picked that very day.
Ikat sarongs and scarfs woven by the local women in the surrounding villages are easy to find. They come in 2 qualities, natural dye and chemical dye. If you don't know the difference, opt for the cheaper chemical dye.
There is a stall opposite Rainbow Cafe where a friendly local woman sells her handmade natural dye ikat - some of the most beautiful in Flores (subjective opinion, but you should go see for yourself). She will show you how the dyes are made and how the weaving is done, which gives a lot more value to what you're buying as you can see how much work goes in to creating each one.
Besides the guesthouses, there are several good restaurants around Moni offering western and local menus. And of course a couple of warungs peddling the cheap and tasty Bakso and Soto Ayam.
Try the traditional Moni dinner offered by a young local called Aran Ivan - he will do vegetarian on request.
Bambu, 25 metre from main road,look at map on the sign, ☎ +6282183601880. Serves a four course meal of traditional Moni food. Flavours are complex and rich. The meal is composed of special local ingredients such as banana flowers and shaved coconut. Menu changes Based on availability of ingredients. Very tasty and a steal at 50,000 per head.you may read some more coments about this place on tripadvisor.rp,25.000/rp,50.000/rp.85.000. edit
Accommodation in Moni is plentiful, although fairly spread out over 2 km along the main road. Prices are per room, and all have private bathroom with western toilets. This lists the accommodation in the order you approach them when arriving from Ende.
Christin Lodge, Moni (One of the first you see coming from Ende, on the left.), ☎ +6281246594236. One of the latest establishments in the area (of 2012), it has 4 comfortable rooms with queen sized bed and big windows that let in plenty lights. Each room ( except one) comes with hot shower. He kept his place very clean and tidy. Include breakfast and palm sugar syrup for the pancake is delicious. Cheaper room without hot shower. US$97 for standard room. edit
Arwanty Bungalow. 2 large bungalows each with 2 rooms that can hold 3 people. A double bed in one room and a single bed in the other room that also holds furniture making out the living room.Rp 200,000. edit
Bintang Lodge by Tobias, Moni kelimutu flores Indonesia, ☎ +62 852 37906259 (firstname.lastname@example.org), . Clean and big rooms with tiled floor. The pricier rooms have hot showers. The restaurant is a great place to meet other travelers. As of May 2012, this is the only place in town with working internet, but there is only laptop and the speed is horrible (Rp 10,000/h).Rp 100,000-350,000. edit
Watugana. 2 very comfortable rooms upstairs and 5 cheapies downstairs with less light and no view, but otherwise same.Rp 100,000-200,000. edit
Maria Inn, Main road (opposite the school - head up the path where you see their sign and veer right), ☎ +6282183601880. checkin: any time; checkout: 12.00. Concrete rooms in the hilly area. The two bungalows in front are nicer but now the family lives in them, every room in the back has bathroom inside and western toilet (no toilet seats though). Some come with hot water, though sometimes there is no running water at all because it is operated through a pumping system that the owners shut down in the evening and at night to save electricity.The owners also have car for Kelimutu for Rp. 200.000.Rp 125,000-200,000. edit
Flores Sare. Imagine a hotel in an atrium setting with a beautiful garden with ponds, canals and fountains in the centre and nice comfortable rooms surrounding that garden. Then you might get an idea what this place looked like 10 years ago. Now imagine that it has never been maintained, the canals are dry, the garden overgrown, and the staff indifferent or simply absent.Rp 250,000-450,000. edit
Kelimutu Crater Lakes Eco Lodge, ☎ +62 361 7474205 (email@example.com), . 10 cute concrete bungalows with balconies and thatched roof. The hotel recycles water and uses solar power. It is the only up-market (although hardly luxury) option in Moni.Rp 700,000. edit
Palm Bungalow, ☎ +62 81227320223 (firstname.lastname@example.org), . Just off the main Moni road where all the other guesthouses are. Palm Bungalow is managed by Robert's wife and sister in law, who take care of their guests like they would their own family, even inviting you for a delicious home cooked dinner with them. Lovely little cottages and bungalows, right by a waterfall. They have bike and car rentals at very low prices to take guests up to Kelimutu and back.Rp 100,000 - 150,000. edit