The owner will not warn you in advance about the ant infestation issue and many mosquitoes, so be prepared. He said this is normal for a ground floor flat when I complained.
Also the house opposite is being rebuilt so be prepared to stay next to a building site for the next year. Lastly the flat is dated, minimal investment spent on it in 20 years so be prepared for things not working and going wrong and generally looking worn out. E.g. Oven, temperamental hot water, Tv reception, electricity fuse box. We ended up moving somewhere else half way through our stay as we lost our patience. My advice would be to look elsewhere.