Vehelma's Roma Norte apartment is the perfect budget jumping off point for exploring Mexico City. In terms of location, it can't be beat. Roma Norte is my favorite part of the city and the apartment is right in the middle of the neighborhood on a quieter street. My group was just two women and we felt very safe in the area, even walking around after dark.
Vehelma met us for check in and gave us some awesome tips for local spots to check out. We loved the food she recommended and we tried pulque on her recommendation which we probably wouldn't have experienced without her. She was responsive to any issues and she met us at the apartment for a smooth check in.
The apartment is basic but comfortable. The beds were great and there is good living space. It is on the second floor and there is a gate on the outside to get in which helps for security. It has a deadbolt which I always appreciate. We didn't spent a ton of time at the apartment because we were off exploring--it is best as a jump off point (no TV, etc. but you don't need one!). She had wifi and all the basics like towels and blow dryer, but bring your own shampoo. The water pressure isn't great but I had no issues showering. We had some issues with the toilet but I'm sure they will be fixed before the next guest.
My only complaint would be that it was pretty loud outside on Friday and we didn't sleep great (not club or music loud or anything, just normal city loud). We didn't have issues on Saturday or Sunday. But, something to be aware of if you are a light sleeper. I don't think this is avoidable in the middle of the city.
Overall, highly recommended for anyone traveling to the city on a budget. You will love walking around and checking out the great food/bar scene within a few blocks of the apartment. And make sure you follow Vehelma's great suggestions (we especially loved the food at Yuban).