旅社 is usually privately owned. It is small and has few other services. Therefore it is much cheaper than a 宾馆 or hotel.
The four characters on both sides of the door glasses indicate the name of the hotel: The first two characters as its name.
欢迎您 are the last three characters that appear at the top. The whole line reads as: Yuexin hotel welcomes you (where Yuexin is the name of the hotel).
住宿 are the two large characters on a rectangular red box next to the door. It simply tells people that this is a lodging place.