I am a _rather_ experienced traveler, and have hosted many travelers. I suppose you are using Jakarta as your first base for your Indonesian trip and would like to also get to know the city.
This 'homestay business' was started several years ago when I hosted one or two travellers with the objective of introducing other cultures to some of my family members who haven't had the chance to travel much (i.e. my nieces and nephews). But I noticed that my neighbors also got the opportunity to interact with some guests who intentionally roam around the neighborhood to understand Jakartan kampung a bit. Because everyone was happy embracing the opportunity of such interaction, I decided to open my door to more travellers. At that time, I had only one extra bedroom in my house that sometimes need to be used by my personal guests (i.e. my siblings, nieces, and nephews), hence some of the travellers had to be refused because the room was already booked.
Then one neighbor needed to sell a house. I bought it and renovated it for 4 months. The focus of renovation was to improve the flow of fresh air and bring more direct sun light to make the house much brighther and energized. I love the result of the renovation. The homestay was opened on July 28th, 2014, and I have heard many positive news about the interactions between the guests and my new neighbors, and especially because many guests have mentioned that they like staying at the homestay very much. I hope that this homestay brings only positivity.
I have stayed in some 5-star hotels and stayed once in Budget Inn (a dark, damp small dungeon with sticky floor in Bukit Bintang, Malaysia). I know that you do not need the St. Regis bed (I don't need St. Regis bed), but I understand that bed needs to be fresh, dry, clean, and hard, and every room needs to have natural light.
I intend to keep the price as low as possible to keep the guests come and facilitate some cultural exchange in any way and positively color the neighborhood. I hope I could continue on doing so for a long period of time.
I have prepared for you (on the shelves in the room) several maps: of Jakarta, of TransJakarta (bus network), city train, Java train route, schedule of the city train, schedule of Java train, and free wi-fi. A copy of Indonesia travel guide book is also available for you to read in the communal room. You can use them, but please return them for the next travelers.
If you need to print anything, there are several cyber cafes that opens 24/7 (except around Idul Fitri holiday). I don't provide breakfast because I don't cook, but tea and coffee are available for you to prepare yourself.
Important warnings: Out of the hundreds of guests who stayed, I have asked 3 guests to leave prematurely because they violated the house rules.