I stayed at Irais's South Lamar apartment for a long weekend in July. The apartment is no-frills but a good value overall.
The furnishing is a bit shabby and the toiletries/household items could be better stocked, but the amenities are good and the location is excellent. Check-in was a bit complicated, but everything was a breeze after that.
There are plenty of dining options within walking distance. If you prefer to explore a bit, there are usually plenty of Bird & Lime electric scooters in the area and there are several bus stops within walking distance. I bought a $2.50 day pass for the bus and had no problem getting to and around downtown quickly. It's a bit of a roundabout journey to get to South Congress, so plan to get a ride to the area if you can.
All in all, the place is a good value and Irais is a communicative host. I'd recommend this apartment for anyone looking for a good jumping-off point for their Austin adventures.