I have approached them after seeing an advert on Gumtree. They have been straight forward in helping me find a decent studio. Valencia has been courteous with us and patiently dealt with all our queries.
They have charged me a fee of 200 £ which I thought was alright compared to unscrupulous rates charged by a few dodgy agents.
When we had an extra 15 days on our previous contract, people at Arvin have convinced our then prospective land lord to wait for an extra 15 days to sign our contract. I guess not many agents would have done that as many agents on the market as far as I have come across are too greedy and want your money right away.
I would highly recommend them !