ByT Argentina 
Please, for your own sake don´t rent an appartment from ByT Argentina, if you have already made yor reservation, consider it as a sunk investment, and don´t waste a minute of your life in the hands of these thefts.
I´ve been to Buenos Aires many times, and never experienced such a disgusting stay. The appartment I rented was posted as in a good neighbourhood and was as much as expensive as any in appartment in Puerto Madero, but It was in a street full of prostitution and lots of homeless people, filthy as well as the appartment, the bed sheets were unironed and they replaced them only after 10 days of use!, and looked and felt like scratch, I found cockroaches, I had to buy a complete set of cleaning stuff just to drink water from tose glasses, don´t mention the pots! I had to cover the TV remote with plastic because of the tartar, the appliances didn´t work well and the people from ByT were informed of everything and did nothing.
Please, don´t jeopardize your vacation with these people, I had a hard time trying to get over the appartment issue in order to have an acceptable time with my family.

http://www.tripadvisor.co.uk/ShowTopic-g312741-i979-k4151135-o60-ByT_Argentina-Buenos_Aires_Capital_Federal_District.html