The studio is in a very good location. It's 15 minute walk from Taksim square. This allows you take Havabus to/from airports instead of taking a taxi. The price of the ticket to/from Sabiha Gokcen airport is 15 Turkish lira (about 3.3 EUR), the price to/from Ataturk airport is 12 Turkish lira (about 2.6 EURO).
The studio is very clean. The kitchen has everything necessary for cooking. Most importantly, Verda and her husband are very nice people. I highly recommend this apartment.