To me it sounds like this: There is a membership (to a gym, etc) available, exclusively (only to) residents (of an apartment, etc).

Hi Sijia, It means you will receive some perks by signing a rental tenancy agreement with the company. For example, it may be discounts on appliances or everyday online delivery, and sometimes even an exclusive concierge service, depending on the property. Every membership is different, so you would have to contact the particular firm to find out what is included!