Helena's apartment is a very good size and in a perfect location. It is on the corner of a high street which has supermarkets, cafe's and restaurants within a 2 minute walk. We ate in one of the restaurants just over the road from the apartment and the food was superb. If you want to eat in a more touristy area you are only a 15 min walk to the river where you will find lots of bars and restaurants with a bit more atmosphere.
There is local tram and Metro stops in the area but we did not use these as we walked or used Uber which was very cheap and arrived quickly.
I would very highly recommend Helena's apartment.