Cheap Guangzhou hotels? You may consider these economical hotel chains, such as Home Inn, 7 Days and Jinjiang Inn. Since March is close to the annual Canton Fair(https://www.travelchinaguide.com/canton-fair/), the hotel rate may be a little higher, especially these ones close to the exhibition centers. If possible, book a hotel as early as possible.

The Guangzhou weather(https://www.travelchinaguide.com/climate/guangzhou.htm) will be fine in March, already warm and comfortable for traveling.