Apartment for sale in Habana Vieja, La Habana

For sale or exchange: apartment in Habana Vieja
I am selling an apartment in Habana Vieja, on the third floor, rooftop, near the fire station, which consists of: living room, dining kitchen, one bedroom, bathroom, covered service patio with double tiled laundry area, countertop, storage room, uncovered patio measuring 3.70 m x 3.70 m, uncovered terrace measuring 7 m x 3.70 m, street gas, 110 and 220 current, with installed air conditioning, only one apartment per floor, fully barred, 4 water reserve tanks, very well ventilated, with no neighbors above or nearby. Landline phone.
In case of exchange, I need: a one-bedroom apartment that has a service patio and other amenities, not on the ground floor or rooftop, preferably with few apartments per floor, and in good condition.
Area 74.4 m²; the apartments on the lower floors have 4 bedrooms, the missing bedrooms in my apartment occupy the terraces.