We loved our stay at Frank's place! Communication through WhatsApp made it easy to check-in and check-out. The apartment looks recently renovated, and is nicely decorated (pictures are accurate). Shower is great, and the bed and linens are SO COMFORTABLE - with the quietness of the apartment, it makes for a very peaceful sleep.
Note: we did hear from friends that the area can be a little sketchy, so we just avoided taking the metro at night, but did not have any problems at all.