Hosts: Josh and Lena are really nice. They don't mind if you come in late or leave early. They also don't mind if you want to have a conversation with them. They have two dogs, but they don't bother you at all. They don't bark at all.
House: You get a bedroom and a bathroom. The bedroom has a full size bed. There is a fan and extra blanket in the closet if you get hot or cold at night. The closet has stuff in it, so there isn't much space for you, but you can put your luggage on top of a drawer. The bathroom is a bathroom. There isn't a fan though, so there's condensation on the mirror after a shower. The light in the bathroom isn't too bright, so it's not the best for makeup, but you can make do with the mirror in the bedroom and if you turn on the light and open the curtains for sunlight.
Location: We didn't rent a car and just used Uber/Lyft to and from the airport. We then used Austin's public buses to get around the city. Austin's public transportation is really cheap. As of October 2019, one fare is only $1.25, or you can just get a day pass for $2.50. They have an app where you can buy your tickets and you just present it to the bus driver. The app also tells you how many minutes away your bus is. Also, the buses go to midnight. As for Josh and Lena's house, you only need to walk one block (just a 2-3 minute walk) to wait for the bus stop to go north/downtown. It's very convenient. For southbound, you just cross the main street, which is only a 1 minute walk.
Also, in case you need to get somewhere super early (like the airport), Uber and Lyft have drivers at that time. Pretty much 24/7. Don't bother trying to book a taxi. We had to leave for the airport at 4:30am. I didn't think Uber/Lyft drivers would be up that late/early, so I tried to book a taxi. No driver showed up at 4:30am, but luckily Uber and Lyft had drivers that early to save our day.