Tablespace freespace with datafile name and location:

SELECT dd.tablespace_name TABLESPACE_NAME,
  dd.file_name FILE_NAME,
  dd.bytes/1024/1024
  ||' MB' TOTAL,
  SUM(fs.bytes)/1024/1024
  ||' MB' FREE
FROM sys.dba_free_space fs,
  sys.dba_data_files dd
WHERE dd.tablespace_name = fs.tablespace_name
AND dd.file_id           = fs.file_id
GROUP BY dd.tablespace_name,
  dd.file_name,
  dd.bytes/1024
ORDER BY dd.tablespace_name,
  dd.file_name;