Acompany would be great! (Milan)

Hi everyone. I am in Milan till 11th July, staying in Brera. I will be busy with business till 7th but afterwords I would love to get suggestions about where in the south is better to go for 3 days, a relaxing holiday by the sea would be great. And as written on the subject of this wire, an acompany would be more than great. Thank you all in advance.