What fares could it be per month for a 2 rooms + small kitchen + bathroom + internet cable facilities in HH ? Not looking for the real center, but in the 1km/5km area.
You should pick something up in the Soi Sarawat/Grand Hotel area for around 7000Baht per month (maximum 10 minutes walk to the centre). Always plenty of houses for rent in that area.
Not sure about the internet cable facilities - I think you'd probably have to arrange that yourself.