I stayed at Natalia's with two friends for 5 days and it was great for what we needed, being a base to head into the city or beach by bus/bike. It's large and clean, the bedroom and bathrooms were particularly nice and modern, while the kitchen is more basic. As a ground floor flat it doesn't get much day light in the living area so is best for if you're not planning to stay inside in the day.
Not a criticism of the place itself, but to be aware, there was construction going on next door when we stayed so we were woken up early in the morning a few times by the noise.
Check in was smooth and Natalia kindly arranged it to suit our arrival time.