From experience, I know there is some stress when planning a trip on your own. What are the hotels, or the hostels, (as in our case) like? Will you be disappointed? Are they in a good area? Are they clean? Are they central to what you want to do? Are they close to the metro stations? Do they offer breakfast? Do you have to take your own linen and towels? (This is sometimes a requirement in some hostels). Are the rooms ensuite? Do they have WiFi and internet access? What are check-in and check-out times? Do they have a custodian on site 24/7? Do they offer laundry facilities? How many are in a room and are they same sex rooms or mixed gender? Do they take Visa or cash only? A lot of these concerns will apply when booking hotels too, particularly lower budget ones and especially when travelling internationally. And we had to make a decision about how long we were going to stay in each place and where we wanted to visit in our limited time.
To try and avoid problems, we thoroughly researched each hostel or hotel, the area, where the attractions were and the metro stations and read all the reviews. Reviews were difficult because there was such a variety of opinions so we went with the majority. We were very fortunate that in all of the places we stayed, they were all decent, fitting most of our criteria. There were some that were better than others but we considered ourselves lucky in the ones we chose. And only once did we end up with a man in the room with us and that was quickly taken care of with no problems.