any experience with www.AllSeasonsRentApartments.com for holiday rentals in Madrid
 

I'm thinking about renting a 'self-catering' flat (in Madrid) from the website www.AllSeasonsRentApartments.com

Does anyone have any experience with this company? Or can you recommend another company from whom to rent? I don't have any experience renting flats this way so I'm a bit hesitant to sign up over the internet with a company I've never heard of (especially because I want to rent an apt over the New Year's holiday).

Thanks!