Thank you all again for you thoughts and ideas.

I have just just booked the Protea hotel by Marriott Cape Town north.

Catagory 5 hotel that has standard 1 bedroom suites on points. After speaking with the hotel, they upgrade to the two bedroom suite for just 385 rand per night. So roughly about £21 per night.

Really pleased overall as cheapest non refundable rate was about £1700 for the week.