Only had 1 night at lemon apartments but wish we had longer. Somewhat hidden, next door to lemon hostel. The interior is nicely decorated and it has a good location within san Telmo, close to the market and many bars/restaurants. The room was large, clean and had a small balcony overlooking the small pool area outdoors. Easy check in and out, apparently with a 24hr reception service too which is a bonus if arriving late. Would definitely stay again if staying in san telmo