If you can afford it, buy in Huancui District. There are many international bathing beaches there, they are relatively mature and convenient for everything.
You can also consider Rongcheng. Rongcheng is the richest county-level city in Shandong and has the longest coastline in Weihai. It accounts for half of the coastline of Weihai and has one of the eight most beautiful beaches in China. It has a good economy. The city is relatively well planned, and it is close to the airport and has convenient transportation. There is an international festival there in July, I forgot about it.
The place in Rushan is the worst. A friend of mine bought it there and it didn’t come with any supporting equipment. I don’t recommend going there. Wendeng has just started planning and construction, it is far away from the city, for reference only