Catalina's condo was wonderful to stay in.
The place is stylish, clean, and well kept with modern amenities and amazing views right above the Royal Mile.
First and foremost is the amazing and convenient location.
The condo is central and within walking distance to almost everything - major attractions; tour bus stops and agencies; restaurants, shops, and groceries (think Tesco or Sainsbury's).
It is minutes away from the Waverly Train Station, the tram station at St. Andrew's Square, and had taxis ready nearby.
This made traveling around Edinburgh easy for us and it was a breeze to get to the airport as well.
Secondly, Catalina is very responsive.
She checked in with us regularly as the date of our stay approached and was clear in her instructions for accessing the condo.
Likewise, any questions we had were met with a quick response time.
There weren't many drawbacks.
One thing I can think of is that the condo, due to being an older construction (as is most of Edinburgh), is not friendly for wheelchairs.
Additionally, I found the TV to have a bit of a delay in reacting. However, it was not a major problem as we mostly kept it on the same channels.
All in all, an excellent choice for any stay in Edinburgh.