Misleading adverticement on website

In December 2017, I booked my stay at The Island Vibe accommodation in Knysna. I came across this place on the website: www.cheap accommodation.co.za. I booked from the 08/01/2018 -10/01/2018. I had to book online with booking.com and a R600.00 deposit was requested to secure my stay. On arrival at The Island Vibe, the advertise board displayed that it was a "backpackers" accommodation. I immediately confronted the reception clerk about the "backpackers" venue. He politely mentioned that if I am not happy with the venue, I have to sort this out with booking.com as they do not refund any deposit paid to booking.com. I was upset and mentioned to him that this is a "misleading add on the website. Thy do not advertise it on the website that it is a "backpackers" stay. I was forced to look for other accommodation at 18H00, when you are tired from the drive from Cape Town. On 16/01/2018 I contacted booking.com and explained the situation and I was told that they will follow it up with The Island Vibe and revert back to me. I have received very slow feedback regarding and on 23/02/2018 I was offered 25 Euro as my refund witch I declined. I requested my full refund, because of the "misleading adverti*****t. Is it possible to please assist me in this regard to finalise this matter.