We stayed for two months in two different apartments, a one-bedroom at Plainpalais, and a 3-bedroom at rue de la Servette. Both are very well located. and well equiped with basic items. The internet is good in both of them. At Plainpalais we missed a fan, and in the hottest days we had to choose between the noise of the street and the heat.
We like to cook at home. The kitchen at Plainpalais is better equipped
than that of Servette, but in both we had to buy some items (wine glasses, for instance). The kitchen at the apartment at Servette is under equipped. There, we could not use the sink in the closet because it was leaking.
I had one unpleasant incident at Plainpalais. At the check-in our host told us that the access to the cave was not possible for he didn't have the keys. He said he would likely get them by the end of that week. I rented a bike by then, but I never got the keys. The bike was kept locked in the sidewald in front of the Plainpalais apartment. During one night it was stolen and I had to pay for it.
In a few occasions we tried to contact our host by phone, email and sms, with either no answer from him or an answer with delay of a couple of days. In one occasion I had to ask for help from Airbnb. But in spite of this he was always correct. We recommend both apartments.