Inaki and Andreas place is well located right in the heart of Casco Viejo. It is well decorated and very comfortable for 2 people. I stayed for 5 days and had a pleasant experience .
The place is close to metro and train stations. Most touristic destinations are within 30 minute walking distance. There is a grocery store right below if you want to buy supplies. The apartment is well equipped but you will have to buy your own coffee or tea. There is multiple restaurants and bars just below which is great however it is noisy during lunch and dinner times.
I thoroughly enjoyed this place and would highly recommend it.