Beatriz and Carlos are wonderful hosts. The apartment was ideal for me as it was bang smack in the centre of Buenos Aires close to shopping, a multitude of dining opportunities and the absolutely fabulous Expanish Spanish School which Beatriz recommended.
The apartment itself was extremely comfortable. Although it was central, at night time the apartment block was beautifully quiet - no barking dogs or night time revellers which I've experienced in BA before.
Really important stuff: The bed is really comfy and has crisp, fresh sheets.The bathroom has thick, fluffy towels and although I soaked in the bath tub every night the hot water never ran out! Believe me, Beatriz has thought of absolutely everything to make your stay comfortable. I arrived on a Sunday evening and I greatly appreciated that she had stocked the fridge with everything I would need for breakfast the next day - there was even a delicious foil wrapped chocolate next to my bed!
It really helped that Beatriz and Carlos could speak English so well.They also seemed to enjoy 'hosting' which was really nice and they gave be lots of good advice and knowledge of local life.
A general tip for BA. I have a 'locked phone' and was silly enough to think that I could get by with using WIFI which was a bad mistake as the WIFI in BA is frequently down - so make sure that you buy your own local SIM card.
I hope to travel to BA again next year and would certainly stay with Beatriz and Carlos again.