Three simple hotels in the city center:
Perminalen
Øvre Slottsgate 2
0157 Oslo
ph: (+47) 23 09 30 81
http://www.perminalen.com/
Cochs Pensjonat
Parkveien 25
0350 Oslo
ph: (+47) 23 33 24 00
http://www.cochspensjonat.no/
Anker Hostel
Storgata 55
N-0182 Oslo, Norway
Booking +47 22 99 72 10
http://www.ankerhostel.no/
Outside city:
Harldsheim
Haraldheimveien 4
0538 Oslo
Ph: (+47) 22 22 69 25
http://www.haraldsheim.oslo.no
To get to the pool, take the subway from downtown Oslo to Lambertseter (line 4 to Bergkrystallen).