https://www.ferplast.com/gb/criceti-15.html this is the one!
We have a Roborovsky and he loves it, there is A LOT of space in there even for his large silent spinner wheel!
Guinea Pigs require a 120x60 (for two as minimum)... well mine have 2 linked one of 120x60 so they have a palace
Hemp is great, it does not smell bed like woodshaving and the felling is much better. Also Burges dward hamster food seems to suite him better than whatever they were feeding him at Pets at Home.