Weigh the costs and benefits before going into any place that requires an entry/exit scan, especially high-traffic locations like Walmart/Carrefour. Think of the potential consequences if the app's central database records that someone found to be sick within the next couple of weeks was also in that place around the same time as you.
Further to AlPage48's suggestion, check out AirBnB and Ctrip - some of the prices are really low right now, presumably because of the coronavirus. You could probably get a decent place for under 500 RMB per week as a stopgap.
Grace is staffed by American doctors and, in my experience, provides the same level of expertise and standard of care that you would expect to find in a good clinic in the U.S. I highly recommend them.